单项选择题

Questions 14-17 are based on a lecture in a college class. You now have 20 seconds to read Questions 14-17.
What are the students going to do during this class period

A．Watch a slide show about trees.
B．Learn how to prevent Dutch elm disease.
C．Study the history of the campus buildings and grounds.
D．Look at examples of trees on campus.

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单项选择题

A．reachB．amount toC．arriveD．gain

A．reach
B．amount to
C．arrive
D．gain

单项选择题

The consequence of the Gulf War that has called the concerns of the scientists is ______.

A．The threat of poisonous desert animals and plants.
B．The exhaustion of energy resources.
C．The destruction of oil wells.
D．The spread of the black powder from the rims.

Questions 14-17 are based on a lecture in a college class. You now have 20 seconds to read Questions 14-17. What are the students going to do during this class period 您的浏览器不支持 audio 元素。

Questions 14-17 are based on a lecture in a college class. You now have 20 seconds to read Questions 14-17.
What are the students going to do during this class period