凝血酶原酶应除外下列哪种物质（）
A.PF3
B.FⅩa
C.FⅤa
D.FⅠV
E.FⅧa
参考答案：E
The mother came in, _____ a cake with ten _____ candles on it and said "Happy Birhtday" to the little girl. [ ]
A. carried; lit
B. carried; lighted
C. carrying; lighted
D. carrying; lit
