Hearing the sad news,he _____his head in his hands and began to cry.
题目
Hearing the sad news,he _____his head in his hands and began to cry.
A placed B hid C laid D buried
选哪个?
答案
D
placed v.放置 vbl.放置
hid vbl.hide的过去式和过去分词
laid vbl.lay的过去式和过去分词
buried vt.埋葬, 掩埋, 隐藏
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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