单项选择题

A bottle weighs more after air is put in. ______ proves that air has weight.

A) We
B) Which
C) It
D) What
<上一题 目录 下一题>
热门 试题

单项选择题
It was in 1916 ______ the Olympic Games were stopped because of World War I.
A) as
B) that
C) which
D) in which
单项选择题
Mary ______ her thick coat because it was snowing.
A) put back
B) put on
C) put away
D) put aside
相关试题