单项选择题

Passage One
Questions 26 to 29 are based on the passage you have just heard.

A．Its chemical elements must be studied.
B．Its temperature must be lowered.
C．Big spaceships must be built.
D．Its atmosphere must be changed.
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单项选择题
A．Colin’s speech was more interesting than any other speakers’.B．Colin’s speech was dull because it was too lengthy and tedious.C．Colin’s speech wasn’t very good but he will do better next time.D．Colin’s speech was good considering the difficulty of addressing so many audience.
A．Colin’s speech was more interesting than any other speakers’.
B．Colin’s speech was dull because it was too lengthy and tedious.
C．Colin’s speech wasn’t very good but he will do better next time.
D．Colin’s speech was good considering the difficulty of addressing so many audience.
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