8×12-(-9)×11=______.
原式=8×12+9×11,
=96+99,
=195.
故答案为:195.
—Allen, your bedroom is in a mess.
—Sorry, Mum. I’ll ______ my things at once.
A.put on
B.put away
C.put out
D.put up
按不同的含水介质,地下水主要可分为哪几种类型?各赋存于什么地层中?