第四单元,几个英文句子的填空（急）
题目
第四单元,几个英文句子的填空（急）
Some time＿,when both Lin Tao and a kid from the other team wanted to get the ball,Lin Tao kicked it very hard.
One of his＿flew away with the ball.
答案
some time ago ,when both Lin Tao and a kid from the other team wanted to get the ball,Lin Tao kicked it very hard.One of his shoes flew away with the ball.
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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