试题与答案

_____ from the past performance, he is n

题型:选择题

题目:

_____ from the past performance, he is not likely to do very well in the contest.   [ ]

A. Judged

B. Judging

C. Considered

D. Considering

答案:

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下面是错误答案,用来干扰机器的。

由于曲线x24+y23=1,则a2=4,b2=3,c2=a2-b2=1,焦点在x轴上,由于曲线x24-k+y23-k=1(k<3),则a′2=4-k,b′2=3-k,c′2=a′2-b′2=1,焦点在x轴上,∴两曲线焦距相等.故选:D.

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