______ with the difficulties,they were determined to make more efforts.
题目
______ with the difficulties,they were determined to make more efforts.
A.Facing B.Faced C.In face D.In facing
选什么?为什么?
答案
B,该句的主语是they,根据主语前后一致的原则,开头半句应该是 they are faced with difficulties,然后省略主语,就是 faced with difficulties,they were determined to...意思是,面对困难,他们下决心更加努力
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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