24. According to the passage, what impacts have world events had on life expectancy?
(A) They have shortened life expectancy.
(B) They have lengthened life expectancy.
(C) They have made life expectancy rise smoothly.
(D) They have had no significant effect on life expectancy.
詳解 (共 4 筆)
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根據該段落,世界事件對預期壽命有何影響?...
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authoritative 權威 ant...