《素问·六节藏象论》所说的“封藏之本”,是指()
A.肺
B.脾
C.肾
D.肝
E.心
参考答案:C
—What have you done ______ the bananas?
—I have given them away. [ ]
A. at
B. in
C. with
D. on
信用证项下不附有商业单据的是( )。
A.无保兑信用证B.不可转让信用证C.跟单信用证D.光票信用证