《素问·平人气象论》曰："人以水谷为本，故人绝（）则死，脉无（）亦死。"
参考答案：水谷；胃气
-----Have you finished your composition already, Jack? ----Yes, I _____ it within half an hour.
A．have finished
B．finish
C．finished
D．had finished
用简便方法计算下面各题。
（1） 61+4×610+59×61
（2）99999×77778+33333×66666
