There was such a long line at the exhibition__we had to wait for half an hour.
题目
There was such a long line at the exhibition__we had to wait for half an hour.
A.as B.that C.so D.hence 为什么是B,不是C?
答案
题目意思是:展会里排起了长长的队伍,我们不得不等了半小时.后面等是前面排起长队的结果,而且前面有such,得用such that句式,表示:如此..以致于
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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.
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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