A heavy box on the floor will stay in place______it is pushed or pulled.

admin2013-06-19  22

问题 A heavy box on the floor will stay in place______it is pushed or pulled.

选项 A、if
B、when
C、unless
D、or else

答案C

解析 状语从句。条件状语从句连词unless表示“除非,如果不”之意。D项表示“否则,要不然”,不符句意。
转载请注明原文地址:https://kaotiyun.com/show/LeQK777K
0

随机试题
最新回复(0)