as for keeping fit,a balance diet counts,and ______regular exercise and enough sleep.
题目
as for keeping fit,a balance diet counts,and ______regular exercise and enough sleep.
A.so is B.so are C.so does D.so do
答案
选D吧,想要保持健康需要均衡膳食,也要定期的运动以及充足的睡眠,前面动词用counts而没有出现be动词,后面相应用do或者does,然后后面是regular exercise和enough sleep两件事情所以用复数用do,就是so do
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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