单项选择题

What is not of the most controversial topics in grand prix racing

A．Security.
B．Engine.
C．The "tyre war".
D．Deaths and accidents.
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单项选择题
The first speaker of this meeting is ______.
A．Dr Scott Macleod
B．Dr. Chen Zhili
C．Mary Smith
D．Dr. Saul Lloy
单项选择题
According to Stewart’s opinion, his revivification technique can ______.
A．restore a dead man or animal to life
B．make the skin begin to twitch
C．keep a live organ alive
D．supply nutrients to human organs
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