He was so tired that he kept his eyes _and said nothing .A:close B:closed C:to closed D:closing
题目
He was so tired that he kept his eyes _and said nothing .A:close B:closed C:to closed D:closing
答案
B close表示“关”的形容词是closed,open的形容词是open,要记住就行了
这里A的意思是“亲密的,靠近的”
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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