从夏商末代国君亡国的教训说明国君应该[ ]
A．加强国防，充实武备
B．发展经济，增强国力
C．重视教育，推行改革
D．施行仁政，勤政爱民
答案：D
_______,but it is also a great way to lower the number of greenhouse gases in the air.
A．Not only a fun thing is it to do
B．Not only a fun thing to do it is
C．Not only it is a fun thing to do
D．Not only is it a fun thing to do
伴有严重营养不良或（和）心肺功能不全患儿输血速度为
A.0.5ml/min
B.1ml/min
C.2ml/min
D.3ml/min
