They ___the school very early.A.get to B.arrived in C.reached to D.arrived at
题目
They ___the school very early.A.get to B.arrived in C.reached to D.arrived at
答案
首先应是过去时态.排除A
其次reach到达是及物动词不需要to 排除C
arrive后跟大地点用In 小地点用at.学校属于小地点.
所以选D
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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