live throughget throughpull through的区别
题目
live throughget throughpull through的区别
答案
live through 经历过; 经历…而未死 She has lived through several terrible accidents.她曾经历过几次可怕的意外事故.get through 穿过; 通过 The passage is too narrow for cars to get through.通道太窄,汽车过...
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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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