Internet,as well as newspapers and magazines,____an important part in our daily life.
题目
Internet,as well as newspapers and magazines,____an important part in our daily life.
A have played
B are playing
C is playing
D has been played
答案
选C,is playing 表示正扮演着、正在成为,主动,且Internet为不可数名次(特定词语)
如果D选项为 has played则表示已经成为
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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