题目

阅读理解 Wheat is a main source of food for people across the planet, accounting for a fifth of the calories consumed globally. But as a result of climate change, scientists believe most parts of the world where the crop is grown will be hit by water shortages by the end of the century. And the US could be among the countries worst affected, the authors of the research published in the journal Science Advances told Newsweek. If climate change isn't dealt with, by the year 2100, 60 percent of areas that grow wheat will be hit by water scarcity—up from the current level of 15 percent, according to the international team of scientists. Co-authors Miroslav Trnka and Song Feng told Newsweek that in their previous research, they had shown climate change may cause soil to become less moist (湿润的) across most mainland US states, including those where wheat is grown. As a result, the US could be "one of the top most affected wheat producers" in terms of the increase in areas affected by severe droughts, they said in a joint statement. Worryingly, existing research has predicted a 4. 0 to 6. 5 percent drop in global wheat production per 1 degree Celsius of warming if climate change isn't eased. And it's unlikely that wheat can be replaced if water becomes scarce, as it's not as thirsty as other crops and can do without water for a relatively long period of time. "If multiple regions are affected by drought at the same time, it might be difficult to meet the demand even if the trade routes stay open and are not restricted by governmental measures," warned Feng and Trnka. However, he said, "Studies show that if we continuously improve the sustainability and technologies in the coming decades and allow for international trade, we may overcome the negative impacts of climate change." （1） How will climate change hurt wheat production？ A . By lowering the temperature. B . By reducing the water supply. C . By polluting the soil. D . By flooding the field. （2） What can we learn from Paragraph 3？ A . Wheat production caused droughts in most mainland US states. B . The United States is the biggest wheat producer in the world. C . The United States will suffer a lot from climate change. D . Climate change is closely watched by American scientists. （3） Why is wheat unlikely to be replaced by other crops in a drought？ A . It is the primary food for most countries. B . It is not influenced by global warming. C . It is widely grown in most countries. D . It needs less water than other crops. （4） In which section of a newspaper may this text appear？ A . Health. B . Science. C . Education. D . Entertainment. 答案： B C D B

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