为了得到较纯净的氮气，某同学采用燃烧法除去一瓶空气中的氧气，下列物质中最适宜选用的是（ ）
A．红磷
B．硫粉
C．蜡烛
D．铁丝
答案：A
It's a very beautiful place. A man is _____ photos here. [ ]
A. take
B. taking
C. drawing
D. draw
The company was named Gates Hall ______ a man named James Gates.
A．in need of
B．in search of
C．in favour of
D．in memory of
