what he said at the meeting made___difference to all of us
题目
what he said at the meeting made___difference to all of us
A.much of B.much a C.a much D.much of a
My watch needs ___,but I have no time to go to town to have it___
A.to repair；repairing B.to be repaired；repairing C.repairing；repaired
D.being repaired ；repaired
答案
D.C
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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