reach for与reach into的区别
题目
reach for与reach into的区别
答案
reach 伸出…以触及The soldier reached for his gun.那名士兵伸手去拿枪.I reached for a floating log with my foot.我用脚去钩取一段漂浮着的木头.reach into伸进〔进入〕I can't reach into the pipe—it's too ...
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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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