1.-Your mobile phone looks nice.How much is it?-It ___ me $800.
题目
1.-Your mobile phone looks nice.How much is it?-It ___ me $800.
1.-Your mobile phone looks nice.How much is it?-It ___ me $800.
A.bought B.paid C.spent D.cost
2.He said ___ at the meeting and just sat there silently(安静地).
A.something B.anything C.nothing D.everything
答案
D.cost(花钱用cost)
C.nothing (根据句意he just sat there silently,他啥也没说)
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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