many flights were____because of the bitter weather today yeah,nobody knows ____such
题目
many flights were____because of the bitter weather today yeah,nobody knows ____such
weather will last 1.cancelled,how long 2.disturbed,how long 3.prevented,how soon 4.frozen,how often
答案
选A
整句意思：由于糟糕天气,许多航班被取消.没人知道这种鬼天气还要持续多久.
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．
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