![](https://lstatic.shangxueba.com/sxbzda/h5/images/m_q_title.png)
A.They could drive the insects away.B.They could keep the plants well-watered.C.They c
A.They could drive the insects away.
B.They could keep the plants well-watered.
C.They could build devices to trap insects.
D.They could protect the plants from severe droughts.
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)