使用油气混烧的加热炉，不需要使用吹灰器对炉膛进行定期吹扫。
参考答案：错
I _______ got a new book. [ ]
A. has
B. have
C. had
With its economy in great stress, Chinese government is now for a way out and looking forward to a new stage in 2011.
A．awkward
B．desperate
C．ashamed
D．automatic
