A、 They give out faint cries.
B、 They make noises to drive away insects.
C、 They extend their water pipes.
D、 They become elastic like rubber bands.

【正确答案】 A

【答案解析】解析：信息明示题。短文开头指出in very hot，dry weather，plants also make faint sounds即在非常炎热干旱的天气里，植物会发出微弱的声音。所以选A。

A、 Quiet plants.
B、 Well-watered plants.
C、 Healthy plants.
D、 Thirsty plants.

【正确答案】 D

【答案解析】解析：信息明示题。短文第二段指出He also knows that many insects prefer attacking dry plants rather than healthyplants．由此可知很多昆虫喜欢攻击处于干旱状态的植物。故选D。

A、 They could drive the insects away.
B、 They could keep the plants well-watered.
C、 They could make the plants grow fester.
D、 They could build devices to trap insects.

【正确答案】 D

【答案解析】解析：信息明示题。根据短文最后两句可知，如果Robert Winter的理论是正确的话，那么科学家就可以利用这个特点来发明可以捕昆虫的装置。故选项D正确。