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This passage is mainly concerned with ______.A.man’s aging process B.man’s life spanC.man’s health D.man’s medical care

A.A.man’s
B.man’s
C.man’s
D.man’s

【参考答案】

A

[注释] 本题的关键是找到主题句，确定短文的中心思想。一般而言，主题句是文......

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The services provided in the first advertisement do not include ______.A.demolishing houses B.cleaning up construction sitesC.transporting machinesD.headache curing

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