四川省绵阳市江油八校联考2023-2024学年八年级上学期12月月考英语试题

四川省江油市八校联考2023-2024学年八年级上学期12月月考 （英语） 一．阅读理解（满分35分） 1．（10分） It is often said，"You can't live only on air." But now the Chinese scientists can tell you：Maybe you can. Recently，some Chinese scientists have developed a new technique （技术）.They turned CO2，one of the main greenhouse gases，into starch （淀粉）. Starch is the main part of flour （面粉） and rice that we eat every day.Usually，it's created by plants with CO2，water and sunlight.According to the team's director Ma Yanhe，it takes the plans nearly 60 steps to produce starch.But now，the team，after six years of hard work，has found a simpler way to do this，with only 11 steps. Our study shows that creating something like starch is possible in a lab，and this technology may be helpful in many areas."said Ma. The scientists first turned CO2 and hydrogen （氢气） into methanol （甲醇）.Then they pieced （分解） these methanol molecules （分子） into bigger and more complex （复杂的） molecules.Finally the starch was produced. This method makes it possible to produce food in factories，taking the place of traditional farming.This will not only help make plenty of food，but also save water and land.It may also help recycle CO2 to deal with climate （气候） change，according to China Daily. The study can be helpful in space，too.Astronauts may no longer need to worry about their food as they travel in space.They may simply turn the CO2 they breathe out into the food they eat! （1）With a new technique，the Chinese scientists could turn CO2 into 　 　. A．air B．water C．sunlight D．starch （2）Plants can create starch with 　 　. A．CO2 and water B．water and sunlight C．CO2，water and sunlight D．CO2 and hydrogen （3）What's the main idea of Paragraph 5？ 　 　 A．How the starch was produced. B．It's difficult to turn CO2 into the starch. C．Scientists can do complex work. D．It tells us the importance of the starch. （4）According to the last two paragraphs，the new method may not help 　 　. A．save water and land B．send astronauts into space C．produce food in factories D．r