【单选题】【消耗次数:1】
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随机题目
【单选题】 If only he __________ what I tell him, but he won’t.
①  had done
②  would do
③  would have done
④  has done
【单选题】 I am very grateful to you for what you’ve given me and __________ you have done for me.
①  which
②  that
③  all what
④  all that
【单选题】 Did Tom tell you to water the flowers?
①  No. And so did I
②  No. And neither did I
③  He did And so I did
④  He did And so do I
【单选题】 I __________ an interesting news item in yesterday’s Times.
①  came across
②  came up
③  came to
④  came over
【单选题】 Many Americans worry about leisure and hurry from one activity to the next, __________ little time to stop and think.
①  leave
②  leaving
③  left
④  to leave
【单选题】 Sorry to interrupt, but can you give me another copy of the handout?
①  No, of course not
②  Certainly
③  I’m sorry to hear that
④  By no means, but it’s impossible
【判断题】 ∫1/1+x^2 dx=arctanx
①  正确
②  错误
【判断题】 ∫sinxdx=-cosx+C
①  正确
②  错误
【单选题】 不定积分∫1/(1+x2)d(x2)=( )
①  arctanx+C
②  -arctanx+C
③  ln(1+x2)+C
④  lnx2+C
【判断题】 f(x)=(x^2-1)/(x-1),g(x)=x+1;f(x)=g(x)
①  正确
②  错误