问题
多项选择题
现有人口和常住人口的关系有（）
A.现有人口=常住人口+暂时外出人口-暂时居留人口
B.现有人口=常住人口-暂时外出人口+暂时居留人口
C.常住人口=现有人口+暂时外出人口-暂时居留人口
D.常住人口=现有人口-暂时外出人口+暂时居留人口
E.常住人口=现有人口-流动人口
答案
参考答案：B, C
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现有人口和常住人口的关系有（）
A.现有人口=常住人口+暂时外出人口-暂时居留人口
B.现有人口=常住人口-暂时外出人口+暂时居留人口
C.常住人口=现有人口+暂时外出人口-暂时居留人口
D.常住人口=现有人口-暂时外出人口+暂时居留人口
E.常住人口=现有人口-流动人口
参考答案：B, C
Passage 2
According to a WHO report, what is the reason for the increases of chronic diseases a. Because the economic gains in many countries have increased. b. Because the environmental pollution is getting more serious. c. Because the people do not have enough money to cure these diseases. d. Because there are not sufficient funds for the treatment of chronic diseases.