choose the best answer选择题
题目
choose the best answer选择题
________fine it is today!A.How B.How a C.What D.What a
They have few friends here,______?A.have't they B.have they C.aren't they D.are they
Both Tom and Mary________travelling.A.enjoy B.enjoys C.do enoy D.does enjoy
There isn't_________fish in the bowl,but there's_________fish on the plate.A.some...any B.some...some C.any...some D.any...any
A friend of________will come to see________this coming weekend.A.he...his B.his...him C.him...he D.he's...he
-lt isn't warm in Shanghai in winter,is it?-________A.Yes,it is.B.No,it isn't C.Yes,it isn't D.No,it is.
答案
A D A C B 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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