问题
单项选择题
下列函数中，不是e2x-e-2x的原函数的是（）
A.A
B.B
C.C
D.D
答案
参考答案：D
解析：
[2(e2x-e-2x)]'=4(e2x+e-2x)≠e2x-e-2x．
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下列函数中，不是e2x-e-2x的原函数的是（）
A.A
B.B
C.C
D.D
参考答案：D
解析：
[2(e2x-e-2x)]'=4(e2x+e-2x)≠e2x-e-2x．
第一节 单词拼写：根据句意及汉语提示，写出各句中所缺单词的正确形式（每小题1分，共10分。） 81.Let’s _____________ (结合) my scientific knowledge and your business skills and start a company. 82.---Do you like smoking? ---On the _____________ ,(相反) I hate it . 83.It’s bad ____________ (礼貌) to stare at others when speaking . 84.It’s _______________ (难以置信的)that such a little boy should work out so difficult a problem while many adults can’t. 85.As a student, we should know exactly what are our _________ (优势)and our weaknesses. 86._______ (好奇的)，Wang Lin went into the police station to seek for more about the accident. 87.Would you mind ____________ (提醒) me to pay a visit to London next Sunday? 88.As you ________（走近）the town， the first building you see is the church. 89.___________ (speak) language as well as body gestures helps us communicate with each other better. 90.You need to talk with Jane to clear the _________ (misunderstand) between you. |