The president promised to keep all the board members _________ of how the negotiations were going o
题目
The president promised to keep all the board members _________ of how the negotiations were going o
A.inform B.informing C.be informed D.informed
答案
D. informed
因为members 是被“通知”的,故要用被动语态,或者可以理keep sb +过去分词
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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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