4个月婴儿，在儿保门诊检查，下列哪些情况认为发育异常
A．前囟未闭
B．乳牙未萌发
C．头不能抬起
D．不能伸手取物
E．拥抱反射(-)
参考答案：C
若点A（3，m）与点B（0，4）的距离为5，则m=______．
They do not think how much money they can make from a song； ,they sing for their emotions and
live for music. [ ]
A. however
B. therefore
C. anyway
D. instead
