The boss asked his secretary_____he had finished typing the report
题目
The boss asked his secretary_____he had finished typing the report
A.if;or not B.if;not
Cwhether;or not D.whether;not
在AC间徘徊 求正确答案以及解释-v-
The boss asked his secretary_____he had finished typing the report_____
A.if;or not B.if;not
Cwhether;or not D.whether;not
答案
Cwhether;or not
if不能和or notlianyong
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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