Are these his pens?Yes, _.A these are B they are 选哪个啊,知道的快说啊

Are these his pens?Yes, _.A these are B they are 选哪个啊,知道的快说啊

题目

Are these his pens?Yes,____ _____.A these are B they are 选哪个啊,知道的快说啊

答案

Are these his pens?Yes,____ _____.
A.these are B.they are
这题应该选择B!这应该是一种习惯性的回答了!

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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想找英语初三上学期的首字母填空练习……

英语翻译

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