1.---- Did the judge ask you many questions?---- Yes,and ______.
题目
1.---- Did the judge ask you many questions?---- Yes,and ______.
A.they were difficult to be answered B.to answer them was to be difficult
C.they were difficult to answer D.they had difficulty in answering
选项 原因
答案
C 他们很难回答 .they were difficult to answer
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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