题目内容

Every time she talked about being rejected in her hunt for a job, she seemed on the ________ of tears, and I would quickly switch the conversation to another topic.

A. frontier
B. border
C. center
D. brink

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‏When my car crashed into the big tree, I could feel the blood draining from my face and I wondered whether I was about to ________.

A. black out
B. stop short
C. plow through
D. pull to a stop

A car crashed into the side of a house after the driver lost control and ________ a hedge (树篱).

A. threw up
B. plowed through
C. went for
D. reached out

All kinds of questions concerning the soaring housing price begin to ________ on cable television and the blogosphere (博客圈).

A. pop up
B. slip away
C. let alone
D. let go

()的底圆直径与顶圆直径之差与圆锥台高度之比即为锥度。

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