He often got up early when he was young( 同义句是什么 ) He_ _ _ up eariy when he was young
题目
He often got up early when he was young( 同义句是什么 ) He_ _ _ up eariy when he was young
还有:He was often sick in the past=He _ _ _ sick in the past
答案
第一个填:used to get
第二个填:used to be
这个题是考察句型used to do 的用法.
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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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