He is known to the world and has a lot of friends_______
题目
He is known to the world and has a lot of friends_______
A .in and out of abroad B .at home and abroadC.at home and at abroad D.in home and out of abroad
为什么选D
答案
怎么可能呢?!答案为BThe demand is rather high both at home and abroad.国内外的需求量都很高.situation both at home and abroad 国内外形势They've met with great favor home and abroad.这些产品在国内外很受...
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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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