作为机体生长、发育和生殖的主要物质基础是
A.液
B.气血
C.水谷之精
D.肾所藏之精
E.津
参考答案：D
____________ people went to the concert which was held in People’s Square the night of May Day.
A．Three thousand, in
B．Thousands, on
C．Many thousand, in
D．Thousands of, on
《周易》的节卦讨论的主要内容是（）。
A.节制欲望
B.日常节约
C.断除欲望
D.君子气节
