Afeatherfallsslowerthanastoneonlybecausetheairholdsthe...

问题详情：

 A feather falls slower than a stone only because the air holds the feather back more than it ______ the stone.

A. does            B. holds            C. will             D. is

【回答】

A

知识点：动词时态与语态

题型：选择题