A.school bullying has increased because of increased reports |
B.school bullying has decreased because of increased reports |
C.the number of reports on school bullying has increased |
D.the number of reports on school bullying has decreased |
A.crime | B.a(chǎn)ggression | C.surfing | D.communication |
A.it isn't as easy to control as the other school bullying |
B.it hasn't been concerned by the governments |
C.it isn't part of school social life |
D.it hasn't come to its top level |
A.positive | B.negative | C.major | D.slight |
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A.ways of protecting animals’ habitats |
B.effects caused by species endangerment |
C.dangers of bringing in non-native species |
D.reasons why animals become endangered |
A.The extinction of the whales. |
B.The extinction of the red-fronted parakeet. |
C.The decreasing population of the dolphin. |
D.The effect of the honeybee on the human diet. |
A.Native species are likely to die from the new diseases. |
B.It’s hard for non-native species to survive. |
C.Non-native species will take up more space. |
D.Native species are so powerful for non-native species. |
A.loss of habitat | B.harmful chemicals |
C.forest cutting | D.unfamiliar diseases |
A.humans are to blame for species extinction |
B.small animals mean little to the whole food chain |
C.protection of the honeybee has cost billions of dollars |
D.humans protect animals for the benefit of themselves |
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A.exposing them to strong sunlight |
B.damaging the structure of their leaves |
C.a(chǎn)dding more pores to the roots |
D.making the land unfit for the plants to grow |
A.Ozone pollution has increased 1 6 times in the past 30 years. |
B.Ozone pollution has lowered plant productivity alone. |
C.Plants can take in a large amount of carbon and other pollutants. |
D.The toxic air has few effects on food supply in China. |
A.Healthy foods are not available in Beijing. |
B.Some kinds of plants aren’t affected by air pollution. |
C.Crops in China are hard to feed its large population. |
D.People should stop developing economically |
A.care more about developing economy |
B.reduce the number of cars and industries |
C.continue to make more researches |
D.take measures to reduce carbon emissions |
A.Polluted air damages plants and crops |
B.Air pollution is becoming more serious |
C.China’s air pollution and climate changes |
D.Food security in China |
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A.Nothing but an electrical device. |
B.A disappointing engineering mistake. |
C.An expensive and disappointing invention. |
D.Disappointing, but still a successful device. |
A.One person at a time can ride on it. |
B.It has two wheels with a single axle. |
C.It is powered by electricity and can go up to 12mph. |
D.Riders increase the speed by moving the handlebars |
A.high cost | B.danger to traffic |
C.being difficult to use | D.contribution to laziness |
A.hopes for a larger model of it |
B.no plans to do anything more with it |
C.some discussions on the unforgettable device |
D.plans to make tens of thousands of them a month |
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A.The Advance of Communications Technology |
B.The Consequences of modern Technology |
C.The Story of Communications Revolution |
D.The Automation of Modern Communications |
A.the people sitting beside you have to go away to receive a phone call |
B.you can hardly get in touch with the people sitting beside you |
C.modern technology makes it hard for people to have a face-to-face talk |
D.people can now go to work without going to the office |
A.satisfying | B.encouraging | C.disappointing | D.embarrassing |
A.modern technology is bridging the people |
B.modern technology is separating the people |
C.modern technology is developing too fast |
D.modern technology is interrupting our communication |
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A.study why planets change orbits after forming |
B.understand how planets move around their stars |
C.a(chǎn)nswer questions about the age of stars and planets |
D.know the relationship between planets and their stars |
A.Their stars are brighter than them.. | B.They are very far from the earth. |
C.They are generally too small. | D.They rarely form. |
A.have been working in the same university |
B.observed the planet on a volcano in Hawaii |
C.used two new methods in the observation |
D.cut holes in the mirrors when observing |
A.Youngest planet seen as it’s forming. |
B.Planet 450 light years away discovered. |
C.World’s first direct image of a planet taken. |
D.New technique helps discover young planets. |
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A.When it begins in the Atlantic and Caribbean seas. |
B.When it hits he coastline. |
C.When it is more than 75 mils wide. |
D.When its winds reach 75 miles per hour. |
A.The destructive effects of water. |
B.The heat they release. |
C.That they last about nine days on the average. |
D.Their strong winds. |
A.the low-pressure area in the center of the storm |
B.the force of waves of water. |
C.the trade winds |
D.the increasing heat |
A.heavy rainfall |
B.dangerous waves |
C.the progress of water to the hurricane center |
D.the increasing heat |
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A.sorrow | B.regret | C.a(chǎn)nger | D.love |
A.Supporting your child in different ways all the time. |
B.Congratulating yourself when your child goes to college. |
C.Preparing your child to stand on their own feet in the future. |
D.Investing as much as possible in the growth of your child. |
A.Developing a new hobby or sport |
B.Learning a new language. |
C.Spending more time with close friends |
D.Staying in touch with your child. |
A.Staying in Touch with Your Child |
B.Preparing to Say Goodbye to Your Child |
C.Dealing with Your Child Leaving Home for University |
D.Life after Your Child Has Left Home for University |
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A.It was floating in space forever. |
B.It flew into heavy clouds. |
C.It returned to the Earth. |
D.It fell onto Venus. |
A.By looking at it with a powerful telescope. |
B.By measuring the thickness of clouds over Venus. |
C.By calculating the microwave bouncing off Venus’s surface. |
D.By orbiting Venus for 4 years in a spacecraft. |
A.Warm lava on Venus |
B.More volcanic eruptions on Venus |
C.Venus is just like a big active volcano |
D.Lava flows are first found on Venus |
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