11.Please have all the figures _______ to see how much they ________.
题目
11.Please have all the figures _______ to see how much they ________.
A.add; add up B.added to; C.add up; add up to D.added up; add up to
答案
D
add up:合计(总而言之,加起来,合计)
add up to:合计达
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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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