The reason why he was late was the rainstorm.He was late ____ there was a rainstorm.改为同义句
题目
The reason why he was late was the rainstorm.He was late ____ there was a rainstorm.改为同义句
答案
这里一般用because
as 和since的语气比较弱.for的语气更弱.这三个单词都是一般说是显而易见的.since有时还会翻译成既然……的意思,所以一般用because.
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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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