9 Your pronunciation has much __(improve),so you should practise more after class.
题目
9 Your pronunciation has much __(improve),so you should practise more after class.
10 This is the first time that he__(chat) on the compurter.
11___(tick) out your favourite activity from the __( follow) ones
12 He returned home late last night,only __(find) his house __ (break) into ,but nothing __(steal).
13 __(return) home ,she began to cook.
14Is Bob still performing?I’m afraid __(leave) the stage as he has become an official.
答案
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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