基础题（100）
二、单项选择。(本题满分20分每小题1分)
21. Look! There is one-eyed elephant near the river. On elephant is a monkey.
A. an; the B. a; the C. a; an D. the; an
22. — What can we do to make birds live a better life?
— We can .
A. encourage people to grow rice in the wetlands
B. prevent people going to wetlands
C. encourage people to feed them
D. make nature reserves in the wetlands
23. — What will an elephant do if it is ?
— Of course ，it will look for a river or a lake.
A. thirsty B. surprised C. tired D. angry
