高性能计算机浮点运算峰值速度到2010年将超过（）′1012次/秒。
A.100
B.200
C.300
D.400
参考答案：B
尿后余沥不尽的病机是()
A.肾精亏虚
B.肾阴亏虚
C.肾气不固
D.膀胱湿热
E.肾不纳气
After the earthquake, a pig trapped in a fallen building was _____ alive after being buried for 36 days. [ ]
A. worked out
B. kept out
C. dug out
D. gave out
