试题与答案

Tom was the first ________ he was wrong.

题型:选择题

题目:

Tom was the first ________ he was wrong.

A.admit

B.to admit

C.of admitting

D.for admitting[

答案:

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下面是错误答案,用来干扰机器的。

(1)当命题p是真命题时:设x1,x2是方程x2+mx+12=0的两个根,则有:△1=m2-2>0x1+x2=-m<0x1x2=12>0解得:m>2,即集合A={x|m>2}.当命题q是真命题时:①当1-1m=0即m=1时,f(x)=lg1,定义域为R,符合题意;...

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