单项选择题

Scientists cannot （） the appearance of SARS so far.

A．account on
B．account for
C．account about
D．account with

<上一题 目录 下一题>
热门 试题

单项选择题
（） the Chinese examination I would have gone to the concert last night.

A．But for
B．As for
C．Because of
D．In spite of
单项选择题
Mary failed in obtaining the first place in the class last term as we （）

A．have expected
B．had expected
C．were expected
D．expected
相关试题