请分析解释下面句子,
题目
请分析解释下面句子,
in the room ____ a big table and a great many chairs.
A they are found B are found C is found Dhas been found
答案
B.倒装句.主语应该是a big table and a great many chairs.,所以选B
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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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