下列物质中有毒且有色的气体是 （ ）
A．CO
B．NO
C．白磷
D．Cl2
答案：D
– Which of the two coats will you take?
– I will take ________. One is for my brother and the other is for myself.
A．either
B．all
C．both
D．neither
重度低渗脱水，伴休克时，扩容治疗采用的液体张力是（）
A.1/5张
B.1/3张
C.1/2张
D.2/3张
E.等张
