用所给单词的适当形式填空.
题目
用所给单词的适当形式填空.
1.I am sure that it’s a ___________ (rain) day tomorrow,do you think so?
2.The day after tomorrow my grandmother is going to have her_______ (ninety) birthday.
答案
正确答案如下:1.I am sure that it’s a _____rainy______ (rain) day tomorrow,do you think so?2.The day after tomorrow my grandmother is going to have her___ nintieth____ (ninety) birthday.后天我的奶奶要...
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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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