单项选择题

Questions 18-20 are based on the following monologue introducing the consequences of the Gulf War. You now have 15 seconds to read Questions 18-20.
What was the good news for scientists

A．The underground oil resources have not been affected.
B．Most of the desert animals and plants have managed to survive.
C．The oil lakes soon dried up and stopped evaporating.
D．The underground water resources have not been polluted.

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填空题

The Hohokam people used to live in what is now ______.

单项选择题

The passage is chiefly about ______.

A．an effort to protect an endangered marine species
B．the civilian use of a military detection system
C．the exposure of a Navy top-secret weapon
D．a new way to look into the behavior of blue whales

Questions 18-20 are based on the following monologue introducing the consequences of the Gulf War. You now have 15 seconds to read Questions 18-20. What was the good news for scientists 您的浏览器不支持 audio 元素。

Questions 18-20 are based on the following monologue introducing the consequences of the Gulf War. You now have 15 seconds to read Questions 18-20.
What was the good news for scientists