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举一反三
【单选题】听Dialogue 2短对话,根据听到的问题选择正确的答案。
A.
To continue his study
B.
To find a chance to do business
C.
To look for a good job
D.
To visit his friends
【简答题】Listen to the text. Put the sentences
in the correct order. 1. No sounds left my mouth. 2. Should I jump, or should I wait until
someone pushes me? 3. Would I try to go bungee jumping again? 4. Being ...
【单选题】Should I go _______to the hospital or call the doctor’s office first?
A.
staff
B.
straight
C.
stage
D.
strong
【简答题】若不定积分 ，则被积函数f(x)______．
【简答题】若不定积分∫f(x)dx=x2＋c，则不定积分∫xf(1－x2)dx=( )． (A)－2(1－x2)2＋c (B)2(1－x2)2＋c (C) (D)若不定积分∫f(x)dx=x 2 +c，则不定积分∫xf(1-x 2 )dx=( )．
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