小儿颅骨缝闭合的时间为生后
A．4～6周
B．6～8周
C．4～6个月
D．1～1．5岁
E．3～4个月
参考答案：E
In a certain game, a large container is filled with red, yellow, green and blue beads worth, respectively, 7, 5, 3, and 2 points each. A number of beads are then removed from the container. If the product of the point values of the removed beads is 147,000, how many red beads were removed ？（）
A．5
B．4
C．3
D．2
E．0
具有活血疗伤，补肾强骨功效的药物为
A．土鳖虫B．自然铜C．血竭D．骨碎补E．苏木
