牛津上海版九下 Unit 1 Saving the Earth Exercise Three（含答案）

牛津上海版（试用本）同步练习 一、单项选择（共10小题） 1. Now the air in our city is _____ than before, so we must do something to stop it. A.very good B.much better C.rather than D.even worse 2. The fish soup tasted so _____ that the guests asked for more. A.bad B.terrible C.well D.good 3. Some people still don't realize the damage _____ the ozone layer. A.of B.to C.at D.for 4. We must plant more trees because they can _____ carbon dioxide. A.take off B.take in C.take away D.take up 5. Bob should do his homework _____ Mary. A.so careful as B.as carefully as C.carefully as D.as careful as 6. In his e-mail, Uncle Li told me many _____ about his visit to Europe. A.news B.stories C.information D.truth 7. The spaceship went up through _____ atmosphere into space. A.a B.an C.the D./ 8. Scientists have discovered that the level of the sea _____. A.has raised B.is rising C.is risen D.raises 9. The magazine tells us _____ pollute the earth. A.don't B.to not C.not D.not to 10. Sally _____ a report on the pollution in our school by the end of last month. A.wrote B.has written C.was writing D.had written 二、阅读理解-阅读选择（共1小题） A sunflower is a sunflower. A mobile phone is a mobile phone. But can you combine the two to do something for your local environment It may well be possible. When you have finished with your mobile phone, you will be able to bury it in the garden or a plant pot and wait for it to flower. A biodegradable (能进行生物降解的) mobile phone has been introduced by scientists. It is hoped that the new type of phone will encourage consumers to recycle. Scientists have come up with a new material. It looks like any other plastic and can be hard or soft, and able to change shape. Overtime it can also break down into the soil without giving out any poisonous chemicals. British researchers used the new material to develop a phone cover that contains a sunflower seed. When this new type of cover turns into waste, it forms nitrates (硝酸盐). These feed the seed and help the flower grow. Engineers have designed a small transparent (透明的) window to hold the seed. They have made sure that it only grows when the phone is thrown away. As phone technology is developing so quickly, people are frequently throwing their mobiles away. This means producers are under pressure to find ways of recycling them. Millions of mobile phones are sold every year. Most of them will be thrown away within two years, adding plastic, heavy metal and chemical waste to the environment. A biodegradable cover can offer some relief for nature, according to the scientists. 11. The biodegradable mobile phone has been introduced in order to _____. A.attract more people to buy new mobile phones B.encourage people to recycle and protect the environment C.show the importance of mobile phone covers D.ask people not to throw away old mobile phones 12. The underlined word "frequently" probably means _____. A.rarely B.often C.from time to time D.regularly 13. _____ can break down ... ...