白细胞计数偏高,提示感冒是由什么引起:()
A、病毒
B、细菌
C、衣原体
参考答案:B
已知2x3y2n和-xmy是同类项,则nm=( ).已知2x3y2n和﹣xmy是同类项,则nm=( )。
.
He wanted to know what I thought, _____ confused me because I thought the author knew
more than I did.
A.when
B.that
C.which
D.where