His failure___his lack of confidence in his ability.A depends on B lies in C relys on D leads to
题目
His failure___his lack of confidence in his ability.A depends on B lies in C relys on D leads to
答案
lies in 在于的意思,
depends on 依靠
relys on 也是指依赖的意思.
leads to 导致
B 他的失败源于缺乏自信
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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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