易发生骨折延迟愈合的骨折是（）
A.股骨粗隆间骨折
B.股骨颈基底部骨折
C.腕舟骨结节部骨折
D.股骨颈头下型骨折
E.胫骨上1／3骨折
参考答案：D
They do have a different to the problem of overpopulation.
A．solution
B．opinion
C．decision
D．conclusion
干洁空气
