2019-2020学年人教版必修五Unit 3 Life in the future Using language课时作业 (7)
2019-2020学年人教版必修五Unit 3 Life in the future Using language课时作业 (7)第2页

  C.The overall health of the old is worse than before.

  D.Many old people have no one to keep them company.

  解析 D 细节理解题。根据第一段第一句可知,独居老人的增多使得与医疗相关的紧急情况增多,即老人缺少陪伴者是这种现象的原因,故选D项。

  2.What's the main advantage of the system mentioned in the text?

  A.Preventing falls.

  B.Serving as an alarm.

  C.Replacing doctors.

  D.Improving health and mind.

  解析 B 推理判断题。根据第二段和第三段最后一句可知,这种系统可以自动探测到老人摔倒,主要起警报作用,故选B项。

  3.What benefit can the first 100 callers to order get?

  A.Buy the system at $300.

  B.Get a copy of Reader's Digest.

  C.Have a pendant at a discount.

  D.Get all­day monitoring and help.

  解析 D 细节理解题。 根据文章中前100名打电话购买者可得到的好处中的第二条可知,他们可以得到全天候的监控和帮助,故选D项。

  B

课标话题 人与自然·自然环境保护 体裁 说明文 词  数 340 难度   (2019·福建三明统测)From the loss of wildlife to rising sea levels, we're all well aware of the problems that climate change could cause. But while it may seem like such issues won't affect most of us directly, it looks like future generations could grow up without something that many of us now take for granted: chocolate.

  According to an essay published by the U.S. National Oceanic and Atmospheric Administration, changes to the climate in the regions that produce cacao-the plant from which chocolate is produced-may mean that it will soon become extinct.

  Most of the world's cacao grows in countries close to the equator, with over half of it growing in the African nations of Ghana and Ivory Coast. It's predicted that by 2050, climate change will have accelerated the rate at which temperatures in these countries rise, making it extremely difficult for cacao to grow there. The problem doesn't lie in increased heat, however,but in lower humidity(湿度), as it's believed that rainfall will stay at the same level if the temperature rises.

"In other words, as higher temperatures squeeze more water out of soil and plants,it's unlikely that rainfall will increase enough to offset the moisture(水分) loss," Michon Scott, the