(单选题)

A research shows that raising a pet can people when they are down.

A.cheer; up

B.let; down

C.leave; behind

D.give; away

参考答案：A

参考解析：

考查动词短语辨析。句意：一项研究表明，养宠物可以在人们情绪低落时让他们振作起来。cheer sb. up意为“使高兴，使振奋”；let sb. down意为“使……失望，松懈”；leave sb. behind意为“留下，遗留”；give sb. away意为“赠送，送出，背叛，泄露”。根据句意可知，此处表示“使振奋”。故选A。

知识点：

A research shows that raising a pet can ______ people ______ when they are down.

A research shows that raising a pet can people when they are down.