2020年高考英语全国卷一阅读理解D（答案详解）

　　32. What is the first paragraph mainly about?

　　A. A new study of different plants.

　　B. A big fall in crime rates.

　　C. Employees from various workplaces.

　　D. Benefits from green plants.

　　答案解析：主旨大意题。根据文中第一段第二句话“Recent studies have found positive effects（最近的研究发现了二者之间的积极影响）”以及后面举的两个例子（均为绿色植物带来的好处）可知，第一段主要描述绿色植物的好处。所以答案选择D。

　　33. What is the function of the sensors printed on plant leaves by MIT engineer?

　　A. To detect plants’ lack of water

　　B. To change compositions of plants

　　C. To make the life of plants longer.

　　D. To test chemicals in plants.

　　答案解析：细节理解题。根据文中第二段第二句话“These include plants that have sensors printed onto their leaves to show when they’re short of water …”中的不定式短语（to show when they’re short of water）可知，传感器是用来显示植物是否缺水的，即答案A中的来检测植物缺水（to detect plants’ lack of water），所以答案选择A。

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