You _____ your seats today if you want to go to watch the final match
题目
You _____ your seats today if you want to go to watch the final match
had better to reserve
B:had better reserve
C:had to better reserve
D:had to reserve better
答案
答案B,had better 固定搭配加动词原型.
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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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