对颅骨凹陷性骨折诊断最有意义的是
A．头部X线平片B．扪得局限性下陷区C．脑受压引起神经系统定位病症D．头部外伤史E．头部X线切线照片
参考答案：E
Everyone knows that a desk is made _____ wood and paper is made _____ wood, too. [ ]
A. of; of
B. from; of
C. from; from
D. of; from
城市是人类社会发展的___________，最早出现于奴隶社会。
A．动力
B．产物
C．基础
D．结果
