Eight children were killed and five were wounded ______ the second knife attack that happened in

Fujian Province on March 23,2010. [ ]

A. as a result of    

B. as for      

C. in addition to        

D. in favor of

沼气是一种能源，它的主要成分是CH₄，0．5molCH₄完全燃烧生成CO₂和H₂O时，放出445kJ热量，则下列热化学方程式中正确的是 [ ]

A．2CH₄（g）＋4O₂（g）＝2CO₂（g）＋4H₂O（l） ΔH＝＋890kJ·mol^-1

B．CH₄（g）＋2O₂（g）＝CO₂（g）＋2H₂O（l） ΔH＝＋890kJ·mol^-1

C．CH₄（g）＋2O₂（g）＝CO₂（g）＋2H₂O（l） ΔH＝－890kJ·mol^-1

D．1/2CH₄（g）＋O₂（g）＝1/2CO₂（g）＋H₂O（l） ΔH＝－890kJ·mol^-1