Materials have now become one of the most important factors ______ the advance of technology and industry depends.
A. on which
B. with which
C. of which
D. for which
查看答案
Sailors like to go sight-seeing when they are ____________ in a foreign port.
A. off duty
B. in common
C. by chance
D. ahead of
He has finished Book Six, but we haven't taken the exam ____________.
A. yet
B. already
C. still
D. also
There has been a serious of the disease in the North.
A. outbreak
B. output
C. outcome
D. outrage
The heat was extreme and the crops were seriously affected.
A. consciously
B. consequently
C. considerably
D. completely
微信支付 
支付宝支付