Mr. Smith asked the man _____________ it again.[ ]
A. not do
B. didn't do
C. not to do
答案:C
(﹣5)3表示[ ]
A.5乘以﹣3
B.5个﹣3连加
C.5个﹣3连乘
D.3个﹣5连乘
内蒙古森林资源从东到西如何分布?