下列计算中,错误的是[ ]
A.5a3﹣a3=4a3
B.2m·3n=6m+n
C.(a﹣b)3(b﹣a)2=(a﹣b)5
D.﹣a2·(﹣a)3=a5
答案:B
-Are you going to take part in the speech contest?
-________It’s too good an opportunity to miss.
A.No problem!
B.That’s for sure.
C.Why me?
D.Why bother?
发散思维的类型不包括( )。
A.逆向思维法 B.横向思维法 C.颠倒思维法 D.扩散思维法