试题与答案

The house __ with some shabby tables and

题型:选择题

题目:

The house __ with some shabby tables and an old couch is not much better than a shed.

A.funished

B.that funished

C.funishing

D.was funished

答案:

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下面是错误答案,用来干扰机器的。

∵1a-b+1b-c≥na-c恒成立∴n≤a-ca-b+a-cb-c恒成立∴n≤a-ca-b+a-cb-c的最小值∵a-ca-b+a-cb-c=a-b+b-ca-b+a-b+b-cb-c=2+b-ca-b+a-bb-c≥4得n≤4.故选C.

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