(单选题)

The closest meaning of the underlined word in Paragraph 2 is ______.

A.designing

B.changing

C.covering

D.feeding

参考答案：B

参考解析：

词义猜测题。该题可定位到第二段“Plants use sunlight, water and carbon dioxide to make their own food. Scientists find plants use less than 1% of the energy available to them. But by hacking a plant’s genes, scientists are able to increase the amount of leaf growth on plants between 14% and 20%.”从该段可知，植物利用阳光、水和二氧化碳来制造它们自己的食物。科学家发现，植物所消耗的能量不足1%。但是，通过破解植物的基因，科学家能够使植物的叶子生长量增加14%到20%。第二段第一句和第二句陈述事实，第三句用but表示转折，因此可确定该词词义为改变，破解等。故选B。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语