( )a year do you go swimming with your friend?
题目
( )a year do you go swimming with your friend?
( )a year do you go swimming with your friend?
-----Once a month
A How often B How long C How soon D How many times
请选择并说明理由.
答案
选A 因为我们看回答是 once a month 是频率,提问频率的特殊疑问词是 how often
how long 是提问多长时间,如 for +时间段和since +时间点
how soon多久之后,提问in +时间段
how many times提问次数,如three times
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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