形成腰椎前凸的年龄
A.6～8周
B.3个月
C.6个月
D.1岁
E.1岁～1岁半
参考答案：D
——How often do I need to feed the dog?
——It___food everyday, or it will be hungry.
A．must give
B．must be give
C．must be given
D．must be gave
55个苹果分给甲乙丙三人，甲的苹果个数是乙的2倍，丙最少但也多于10个，丙得到了多少个苹果( )
A．11个
B．12个
C．13个
D．16个
