历史上通过两次资产阶级革命为本国资本主义发展扫除障碍的国家是： [ ] A、美国

World Wildlife Fund _____ very much the efforts that China has made to protect endangered

species from being further endangered. [ ]

A. enjoys

B. prefers

C. loves

D. appreciates

简述万寿菊与孔雀草的形态区别。

Tony's father_______long hours every day.[ ]

A. works                      

B. to work                    

C. working

下列不属于行政奖励的是( )。

A．优待补助

B．通报表扬

C．授予荣誉称号

D．给予奖金或奖励

锅炉热损失有哪几项？