He speak English _______ he speaks French.A.as good as B.much more better than C.so well as
题目
He speak English _______ he speaks French.A.as good as B.much more better than C.so well as
D.as well as
答案
选D.A项用good不对.B项多了more,better已经是比较级了,不用加more.C项so ..as这种情况只用于否定句中.而本句是肯定句.
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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.
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