休克时正确的补液原则是（）
A.失多少补多少
B.需多少补多少
C.不必补液
D.宁多勿少
E.以上都不对
参考答案：B
Word came _______ the students would put off the outing until next week, when they wouldn’t be busy.
A．that
B．when
C．which
D．whether
A．F．B．means Air( )Bill．
A．Free
B．Freight
C．Foreign
D．Full
