按本规范相关规定，下述（）地基中可采用打入桩基础。
A.粉土
B.风化泥岩
C.卵石土
D.软硬互层的风化层
参考答案：A
关于引起脑外伤后患者躁动的原因有（）
A.躯体疼痛
B.颅内压增高
C.尿潴留
D.体位或环境不适
E.以上都是
_______ is known to the world, the Chinese in many places _______ the old tradition.
A．That; keep on
B．which; keep out
C．It ; keep back
D．As; keep up
