把x=3y=-2代入方程2x+my=-6，
得6-2m=-6，
解得m=6．
No matter how you read it, this sentence just doesn't make sense-the most important words have been
________. [ ]
A. put out
B. picked out
C. taken out
D. left out
用于解决区域移动管理的协议是（）。
A.MIP协议
B.PMIP协议
C.IP协议
D.TCP协议
