She has decided to ___her English,so she asked me to___a couple of dictionaries for her.
题目
She has decided to ___her English,so she asked me to___a couple of dictionaries for her.
A pick out;pick up B pick up;pick out C pick out;pick off
D pick up;pick off 答案及解析/.
答案
Pick up means improve; Pick out means select.She has decided to improve her English,so she asked me to select a couple of dictionaries for her.The answer is B.Done
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．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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