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  3. What is this passage mainly about? What did people do to solve the problem of rain lack around Chad Lake?

What is this passage mainly about? What did people do to solve the problem of rain lack around Chad Lake?

admin2009-04-23  30
问题 What is this passage mainly about?
What did people do to solve the problem of rain lack around Chad Lake?
选项 A、They moved out of this area.
B、They drew water from Lake Chad.
C、They carried water from other areas.
D、They utilize sea water near this area.
答案B
解析 细节推理题。关键段落:"This has forced people to build systems to carry water to dry land. These irrigation systems further de crease the lake."可见人们采取的方式是从湖中提取水分。而A迁移出去；C从其他地方运水；D从海水中运水文中均未提及。
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