英语高手看看whose jacket is this,Tina?It’s___Tina’s Red is Tina’s favourite color and she
题目
英语高手看看whose jacket is this,Tina?It’s___Tina’s Red is Tina’s favourite color and she
looked for her jacket a moment ago
A possibly B probably C must D impossibly
选哪个,要原因,
答案
举一反三
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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