题目内容
The thieves ran away as fast as possible at the ___ of the policemen.
A. scenery B.sight C.view D. scene
He managed to reach the summit of his career, but it was at the _________ of his health.
A. consumption B. credit C. exhaustion D. expense
Now I come here at the ______ of Mr.Smith to assist him finishing the work.
A.requireB.remark
C.demandD.request
Without a sure supply of water, farming in that area remains at the _______of the weather.
A.disposal B.risk C.cost D.mercy
Many kinds of birds fly south at the ______ of winter.
A. sight B. approach C. direction D. access