Listen to the news and then choose the best answer to the question.
A. In Tucson, Arizona.
B. In Toronto, Canada.
C. In Botswana, Southern Africa.
D. In Angola, Southern Africa.
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Listen to the news and then choose the best answer to the question.
A. One to two meters across.
B. Three meters across.
C. Four meters across.
D. Five meters across.
Listen to the conversation and then choose the best answers.
A. By finding another planet for people to live on.
By finding another country for people to immigrate to.
C. By building more homes.
D. By having more families live together.
Listen to the conversation and then choose the best answers.
A. People will live in nice houses.
B. The air will be good to breathe.
C. Animals will lose their natural environments.
D. There will be a lot of parks and open spaces.
资源争夺型指的是指定角色的无领导小组讨论。（）
A. 对
B. 错
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