3648=36÷1248÷12=34=3÷4，
34=3×64×6=1824；
故答案为：24、3．
People _______ the southwest of China were in great need of water a couple of months ago. [ ]
A. in
B. at
C. to
D. on
试述鱼苗适时下塘的含义及好处
