He ______ be in the classroom,I think.
题目
He ______ be in the classroom,I think.
No,he ______ be in the classroom.I saw hom go home a minute ago.
A.can,may not
B.must,may not
C.may,can't
D.may,mustn't
答案
,C从I think.看出只是个人的猜测,所以用may.从I saw hom go home a minute ago.,看出非常肯定,所以用can't
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
最新试题
热门考点