instruction stringlengths 1 298 | input stringlengths 0 977 | output stringlengths 1 48 |
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There is a single choice question. Answer the question by replying A, B, C or D.
| Question: In mice, a certain species displays incomplete dominance in coat coloring. The offspring of a black (BB) mouse and a white (bb) mouse are gray (Bb) mice. A cross between two gray mice will most likely produce offspring with which percent of coat colors?A. 25% black, 75% gray
B. 25% gray, 75% white
C. 25% whit... | C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: A student used two long wires to connect a lightbulb to a battery. The student noticed that as soon as the circuit was complete, a nearby compass started to point in a direction other than north. The compass pointed in a different direction because it was reacting to theA. heat produced by the lightbulb.
B. l... | D |
以下是单项选择题，请直接给出正确答案的选项A,B,C,D。
| 题目:局域网的协议结构包括____。
Ⅰ．网络层Ⅱ．数据链路层
Ⅲ．物理层Ⅳ．介质访问控制层
A. Ⅰ、Ⅱ、Ⅲ
B. Ⅰ、Ⅱ、Ⅳ
C. Ⅰ、Ⅲ、Ⅳ
D. Ⅱ、Ⅲ、Ⅳ
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: The topography of Nevada is dominated by basins and mountain ranges associated with which geological phenomena?A. faults
B. trenches
C. hot spots
D. hydrothermal vents
| A |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Clouds are formed from tiny drops of water that are light enough to float in the air. As these drops bump into each other, they form larger drops. What happens when these drops become too heavy to float in the air?A. The drops form fog.
B. The drops evaporate.
C. The drops fall as rain.
D. The drops become ai... | C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: How do oceans influence seashore climates?A. They tend to make them warmer.
B. They tend to make them colder.
C. They tend to increase temperature ranges.
D. They tend to reduce temperature ranges.
| D |
以下是单项选择题，请直接给出正确答案的选项A,B,C,D。
| 题目:足球是一项集体运动，若想不断取得胜利，每个强队都必须有一位核心队员，他总是能在关键场次带领全队赢得比赛。友南是某国甲级联赛强队西海队队员。据某记者统计，在上赛季参加的所有比赛中，有友南参赛的场次，西海队胜率高达75．5％，另有16．3％的平局，8．2％的场次输球，而在友南缺战的情况下，西海队胜率只有58．9％，输球的比率高达23．5％。该记者由此得出结论，友南是上赛季西海队的核心队员。以下哪项如果为真,最能质疑该记者的结论____
A. 上赛季友南上场且西海队输球的比赛，都是西海队与传统强队对阵的关键场次。
B. 西海队队长表示：“没有友南我们将失去很多东西，但我们会找到解决办法。”
C. 本赛季开始以来，在友南上场的情况下，... | A |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: The Apollo 11 mission was able to retrieve samples of the Moon's surface because it was the first mission to have astronautsA. land on the Moon
B. orbit a planet
C. return to Earth
D. walk in space
| A |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which change resulted from the heating of the planets as they formed?A. Their masses increased.
B. They lost most of their radioactive isotopes.
C. Their structures differentiated into distinct layers.
D. They started to revolve around the Sun.
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: A Green Community Many cities in the United States are developing "green communities." A green community is intended to reduce the use of energy and consists of houses, apartments, and nearby businesses. Grocery stores, restaurants, and movie theaters are all within walking distance of the homes in the commun... | C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: In pea plants, the allele for smooth peas is dominant (S). If a heterozygous smooth pea plant (Ss) is crossed with a homozygous smooth pea plant (SS), which are the possible genotypes the offspring could have?A. only SS
B. only Ss
C. Ss or SS
D. ss or SS
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: The energy that allows the water cycle to occur comes fromA. friction.
B. electricity.
C. the Sun.
D. radioactive decay.
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: If two objects are two meters apart, which of these changes will increase the gravitational force between the two objects?A. decreasing the mass of one object
B. decreasing the mass of both objects
C. moving the objects to one meter apart
D. moving the objects to three meters apart
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Colored alcohol is used in some glass thermometers. When placed in air of different temperatures, the column of alcohol rises or falls in the glass thermometer. Which of the following best explains why the height of the alcohol column changes?A. The glass contracts when heated.
B. The alcohol contracts when h... | D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which of the following objects is probably the most flexible?A. a ceramic dish
B. a wooden block
C. a short steel rod
D. a new rubber hose
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: A turtle eating worms is an example ofA. breathing
B. reproducing
C. eliminating waste
D. taking in nutrients
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which of these objects is translucent?A. A student's notebook
B. A mirror on the bus
C. A brick wall of the school
D. A student's sunglass lenses
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which statement best describes a learned characteristic in a dog?A. A dog scratches at a door to go outside.
B. A dog has floppy ears.
C. A dog pants to cool itself on a hot day.
D. A dog has a dark coat.
| A |
以下是单项选择题，请直接给出正确答案的选项A,B,C,D。
| 题目:诊断性腹腔穿刺不应用于____
A. 小儿及老年人
B. 精神状态不正常者
C. 昏迷病人
D. 诊断已明确的病人
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Meiosis contributes to the process of reproduction by producing what type of cell?A. aneuploid
B. diploid
C. haploid
D. polyploid
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Professor Walden studies genetics at a local university. She believes that she has discovered information that contradicts a widely accepted theory. As a scientist and leader in the study of genetics, which action should she take?A. Announce to the world that her theory is better than the old theory.
B. Call ... | C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which of these statements best describes temperature as elevation in the atmosphere increases?A. Temperature remains constant with elevation in the thermosphere.
B. Temperature remains constant with elevation in the mesosphere.
C. Temperature generally decreases with elevation in the stratosphere.
D. Temperat... | D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: One example of a trait passed from a parent plant to its offspring is ___.A. the amount of water in the plant's environment
B. the amount of sunlight shining on the plant
C. the color of the flowers on the plant
D. the nutrients in the soil where the plant grows
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: A student placed a rock in a graduated cylinder containing water, causing the water level in the cylinder to increase by 20 mL. This increase represents the rock's1. mass
2. volume
3. solubility
4. temperature
| 2 |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Mount Arenal, a volcano in Costa Rica, is erupting. Heat is being released during the eruption. What is the source of the heat?A. The heat comes from the Sun.
B. The heat comes from pools of underground water.
C. The heat comes from deep within Earth.
D. The heat comes from decaying plants and animals.
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: A student riding a bicycle observes that it moves faster on a smooth road than on a rough road. This happens because the smooth road hasA. less gravity
B. more gravity
C. less friction
D. more friction
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: When a dog sees a cat, a message travels from the dog's eyes to the dog'sA. brain
B. nose
C. paws
D. muscles
| A |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Removing the coal from Earth's crust can change the structure of the crust, release methane gas, and contaminate groundwater with heavy metals. Which of Earth's subsystems is most likely to be affected by all these consequences?A. atmosphere
B. biosphere
C. hydrosphere
D. lithosphere
| B |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: The Moon revolves around Earth. This causesA. Earth to be warmer at night.
B. Earth to rotate more rapidly.
C. the Moon to shine more brightly than other objects in the sky.
D. the Moon to appear as different shapes during the month.
| D |
以下是单项选择题，请直接给出正确答案的选项A,B,C,D。
| 题目:下列关于不存在减值迹象的可供出售金融资产会计处理的表述，正确的是____。
A. 取得时将发生的相关交易费用计入当期损益
B. 将出售的剩余部分重分类为交易性金融资产
C. 资产负债表日将公允价值与账面价值的差额计入当期损益
D. 将出售时实际收到的金额与账面价值之间的差额计入当期损益
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Upwelling moves the water of the deep ocean to the ocean's surface. What else does upwelling move to the surface?A. fish
B. nutrients
C. phytoplankton
D. dissolved gases
| B |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: A student is given a sample of an unknown liquid to test in the laboratory. The student thinks that the liquid is water. Which of the following physical properties of the sample is most helpful to determine if the liquid is water?A. color of the liquid
B. mass of the liquid
C. volume of the liquid
D. boiling ... | D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which is most likely to cause an organism to become endangered or extinct?A. habitat loss
B. behavioral changes
C. increased reproduction rate
D. altered migration patterns
| A |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: A person riding in a moving Ferris wheel is constantly changingA. mass.
B. speed.
C. net force.
D. rate of rotation.
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which part makes a plant cell different from an animal cell?A. cell membrane
B. cell wall
C. cytoplasm
D. nucleus
| B |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which example would result in new cells that are most different from the parent cells?1. yeast cells splitting into new cells
2. bacteria cells dividing into new cells
3. skin cells dividing to produce more skin cells
4. sperm and egg cells uniting to produce fertilized egg cells
| 4 |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Research has shown that specialization of stem cells into specific cell types results, in part, from cell shape. What provides a specialized cell with its shape?A. number of mitochondria
B. presence of a nucleus
C. structure of the cytoskeleton
D. salt concentration of cytoplasm
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: During which phase change is heat energy absorbed by a substance?1. liquid to gas
2. gas to solid
3. liquid to solid
4. gas to liquid
| 1 |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which is the most accurate model to show how amino acids form proteins?A. bees in a hive
B. cars on a train
C. petals on a flower
D. pieces in a jigsaw puzzle
| B |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Current moving through a circuit is stopped with aA. wire.
B. battery.
C. switch.
D. bulb.
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: If a nerve cell stopped functioning, the cell wouldA. start producing oxygen.
B. begin dividing into more cells.
C. become a different type of cell.
D. stop sending signals to the brain.
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: A teacher opens a can of food in the front of a classroom. Soon, all of the students in the classroom can smell the food. Which statement identifies a property of a gas that allows all of the students to smell the food?A. A gas has no mass.
B. A gas has a large mass.
C. A gas takes the shape of its container.... | C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Joyce put 200 milliliters of water in a beaker, put a thermometer in it, and heated it until it started to boil. She recorded a temperature of 100°C when it started to boil. She repeated the process with 400 milliliters of water. What would be the temperature when the second sample started to boil?A. twice as... | D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: A student compared the speeds at which a large and a small marble rolled down an inclined plane. In order to make the findings more reliable, the student shouldA. release the marbles at different heights.
B. repeat the experiment several times.
C. tilt the plane at different angles.
D. use two marbles that ar... | B |
以下是单项选择题，请直接给出正确答案的选项A,B,C,D。
| 题目:《钦差大臣》是____创作的。
A. 萧伯纳
B. 契诃夫
C. 易卜生
D. 果戈理
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which process in the carbon cycle takes the longest to complete?A. emission of waste
B. respiration in animals
C. photosynthesis in plants
D. formation of fossil fuels
| D |
以下是单项选择题，请直接给出正确答案的选项A,B,C,D。
| 题目:某有机物在氧气中燃烧生成水蒸气和二氧化碳的物质的量之比为 1：1，由此得出的结论是____
A. 该有机物分子中 C：H：O 原子个数比为 1：2：3
B. 该有机物分子中 C：H 原子个数比为 1：1
C. 该有机物中必定含氧
D. 无法判断该有机物中是否含氧
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which of the following is an example of an acidic solution?A. bleach
B. vinegar
C. sugar water
D. salt water
| B |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: A rosebush and a bird are similar because they bothA. are living organisms.
B. need to search for food.
C. make their own food.
D. are non-living organisms.
| A |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: How do coal and the sun compare as sources of energy?A. Coal is renewable, and the sun is renewable.
B. Coal is renewable, and the sun is nonrenewable.
C. Coal is nonrenewable, and the sun is renewable.
D. Coal is nonrenewable, and the sun is nonrenewable.
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which parts of the plants have the most similar jobs?A. flowers and leaves
B. leaves and stems
C. stems and branches
D. branches and flowers
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which of these situations would most likely be a result of climate change?A. weaker storms, causing less shoreline erosion
B. shorter days, causing longer hibernation periods
C. shrinking glaciers, causing sea levels to rise
D. increased radioactivity, causing damage to cells
| C |
以下是单项选择题，请直接给出正确答案的选项A,B,C,D。
| 题目:水温观测频次，应每间隔____h观测一次水温，统计计算日平均水温。
A. 2
B. 4
C. 6
D. 8
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: When a person parachutes from a plane, she travels at about 67 meters per second. When she pulls her cord and her chute opens, she slows to about 3 meters per second. If the velocity and acceleration are both considered positive before the chute opens, how do her velocity and acceleration change when the chut... | C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which statement is true about rocks?A. Minerals are made of rocks.
B. Crystals are made of rocks.
C. Rocks are made of one or more minerals.
D. Magma is made of solid rock.
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Russell wants to observe changes in nature over the next few months. What can a thermometer help Russell investigate?A. rainfall amounts each week
B. tiny organisms in pond water
C. the high temperatures each day
D. the amount of growth in a plant
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: What activity must mRNA do in traveling from DNA to protein synthesis sites in eukaryotic cells that does not occur in prokaryotic cells?A. duplicate itself
B. break off some of its phosphates to release energy
C. cross a membrane
D. coil into a compact crystal form
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: When a frying pan is placed on an electric stove top, heat energy is transferred from the burner to the pan byA. convection.
B. radiation.
C. conduction.
D. insulation.
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which type of matter can be separated by physical means?A. atom
B. element
C. compound
D. mixture
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: A ball is tossed up in the air and it comes back down. The ball comes back down because ofA. gravity
B. friction
C. erosion
D. magnetism
| A |
以下是单项选择题，请直接给出正确答案的选项A,B,C,D。
| 题目:形成日后华夏族的主要部落是____
A. 黄帝、蚩尤部落
B. 炎帝、蚩尤部落
C. 黄帝、炎帝、蚩尤部落
D. 黄帝、炎帝部落
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Dogs have some learned behaviors. Which is most likely a learned behavior in a dog?A. sniffing to find food
B. panting when it feels hot
C. chasing a squirrel up a tree
D. barking when it wants to go outside
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which generates waves that are capable of traveling through a vacuum?A. a light bulb
B. a speaker
C. earthquake activity
D. volcanic eruption
| A |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which statement best describes the molecules in a sample of water that was heated from a liquid to a gas?A. The average size of the molecules decreased.
B. The average size of the molecules increased.
C. The average kinetic energy of the molecules decreased.
D. The average kinetic energy of the molecules incr... | D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: If you place a thermometer into a glass of boiling water, what temperature should the thermometer read?A. 32°C
B. 100°C
C. 200°C
D. 212°C
| B |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which concept supports the endosymbiotic origin of complex, eukaryotic double-membrane structures?A. Mitochondria and chloroplasts arise from preexisting mitochondria and chloroplasts.
B. Mitochondria and chloroplasts arise from preexisting endomembrane systems.
C. Mitochondria and chloroplasts are synthesize... | A |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which of these is the most responsible for the changes of the seasons on Earth?A. Position of the Moon
B. Tilt of Earth on its axis
C. Temperature of the Sun
D. Distance to Mars
| B |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: A battery-powered cart pulls an 800-gram load across the floor. If the load were reduced to 400 grams, and the force used to move the cart remained the same, the cart would1. move slower
2. move faster
3. move at the same speed
4. stop moving
| 2 |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: The engine of an automobile is part of which type of system?A. structure
B. propulsion
C. guidance
D. control
| B |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: A student drops a ball. Which force causes the ball to fall to the ground?A. electricity
B. friction
C. gravity
D. magnetism
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: In order for a material to be effective for cooking, it must have which physical property?A. low melting point
B. high electric charge
C. high reactivity with water
D. low thermal expansion
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which is an example of a chemical change?A. a rusting car fender
B. a spinning top
C. a spilled bucket of water
D. a melting popsicle
| A |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which question about tulips could best be answered by scientific research?A. Are tulips better than other flowers?
B. What genes determine tulip petal color?
C. Why do people like to look at tulips?
D. Which color of tulips is the prettiest?
| B |
以下是单项选择题，请直接给出正确答案的选项A,B,C,D。
| 题目:UDP报头部长度为____。
A. 8B
B. 20B
C. 60B
D. 不定长
| A |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which stimulus causes a porcupine to extend its quills?A. lunar effect on Earth
B. seasonal temperature changes
C. threatening behavior by predators
D. environmental encroachment by humans
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which is most likely responsible for the chinch bugs' ability to survive repeated exposure to insecticides?A. species diversity
B. genetic diversity
C. ecosystem diversity
D. population diversity
| B |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Some antibiotics used to treat infections in humans are also used to treat chickens, but some groups oppose this practice. The overuse of the antibiotics will most likely influence the natural selection of which type of organisms?A. chickens that naturally make the antibiotics
B. microbes that are resistant t... | B |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Scientists believe that oceans once covered much of what is now land. which of these things found on land led scientists to believe this?A. underground water
B. sand soil
C. fossils of fish
D. salty lakes
| C |
以下是单项选择题，请直接给出正确答案的选项A,B,C,D。
| 题目:下列可以反映气候垂直变化的诗句是____。
A. 东边日出西边雨，道是无晴却有晴
B. 罗浮山下四时春，卢橘杨梅次第新
C. 人间四月芳菲尽，山寺桃花始盛开
D. 横看成岭侧成峰，远近高低各不同
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which term is used to describe a physical property of a mineral?A. organic
B. solid
C. gaseous
D. fossiliferous
| B |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which metalloid is used in solar cells and computer chips?A. silicon
B. silver
C. arsenic
D. antimony
| A |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: In what form do plants store the energy produced from sunlight?A. radiant
B. thermal
C. chemical
D. mechanical
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: According to cell classification, prokaryotic cells are separated from eukaryotic cells. Which feature is often used to distinguish prokaryotic cells from eukaryotic cells?A. life processes
B. size differences
C. plasma membranes
D. energy molecules
| B |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which of these steps in the rock cycle occurs ONLY in the formation of metamorphic rock?A. erosion
B. compaction
C. cementation
D. recrystallization
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: When astronauts walked on the Moon, they used weighted boots to help them walk due to the lower gravitational pull. What difference between Earth and the Moon accounts for the difference in gravity?A. density
B. diameter
C. mass
D. volume
| C |
以下是单项选择题，请直接给出正确答案的选项A,B,C,D。
| 题目:南和公司因长期不能清偿到期债务，向人民法院申请破产。东尚公司是南和公司的债权人，下列与东尚公司有关的事项中，正确的是____。
A. 债权还有2个月到期，东尚公司不能申报破产债权
B. 东尚公司可以口头向管理人申报债权
C. 东尚公司申报债权后，就可以行使债权人的权利
D. 东尚公司申报债权时需要提供债权申请书、债权证据材料等内容
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: A scientific explanation should include a demonstration of the relationships betweenA. measurement, form, and function.
B. changes, interactions, and formulas.
C. logic, evidence, and current knowledge.
D. hypothesis, problem solving, and lab equipment.
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: An enzyme in the Golgi apparatus catalyzes the addition of phosphates to which class of molecule?A. lipid
B. carbohydrate
C. nucleic acid
D. protein
| D |
以下是单项选择题，请直接给出正确答案的选项A,B,C,D。
| 题目:大修的城市道路竣工后____年内不得挖掘；因特殊情况需要挖掘的，须经县级以上城市人民政府批准。
A. 3
B. 4
C. 5
D. 6
| A |
以下是单项选择题，请直接给出正确答案的选项A,B,C,D。
| 题目:公民、法人和社会团体为了促进城市规划有效、合理地实施，为了维护自己的合法权利，可以依法对城市规划行政机关做出的具体行政行为提出____。
A. 行政诉讼
B. 民事诉讼
C. 行政仲裁
D. 申诉
| A |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Atmospheric greenhouse gases help heat the atmosphere byA. increasing the amount of solar radiation reaching Earth.
B. storing energy produced by human activity.
C. absorbing infrared radiation released by Earth.
D. increasing the average density of air.
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Trevor turns on a lamp. When the lamp is on, electrical energy changes into which other form of energy?A. chemical
B. light
C. mechanical
D. potential
| B |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: What most likely happens when a cold air mass comes into contact with a warm, moist air mass?A. The sky becomes clear.
B. Rain or snow begins to fall.
C. Cold air is pushed to high altitudes.
D. Warm air is pushed to ground level.
| B |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which energy source is considered nonrenewable?1. moving water
2. fossil fuel
3. wind
4. biomass
| 2 |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Freda always hangs her wet swimsuit outdoors after getting out of the swimming pool. Which of the following is least likely to affect the rate at which Freda's swimsuit dries?A. the heat of the Sun
B. the speed of the wind
C. the temperature of the water in the pool
D. the amount of water vapor in the air
| C |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which is an example of a single-celled organism?A. amoeba
B. insect
C. fish
D. worm
| A |
以下是单项选择题，请直接给出正确答案的选项A,B,C,D。
| 题目:硅尘可导致硅沉着病，其中致病力最强的硅尘颗粒直径为____
A. ＞5μm
B. 4～5μm
C. 2～3／μm
D. 1～2μm
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: How does a student best avoid becoming dehydrated during a field investigation on a hot day?A. drink water from a bottle
B. wear a wide-brimmed hat
C. drink a lot before leaving school
D. drink from a clear running stream
| A |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: In the life cycle of a fly, which stage comes after the larval stage?A. egg
B. adult
C. nymph
D. pupa
| D |
There is a single choice question. Answer the question by replying A, B, C or D.
| Question: Which of these is the center of our solar system?A. Mars
B. The moon
C. Jupiter
D. The sun
| D |
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