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25. Which of the following sentences best summarizes this article?
(A) Males should pay more attention to osteoporosis than females.
(B) Old people are at high risk for a bone disorder called osteoporosis.
(C) Various factors may cause osteoporosis, but there are ways to reduce the risk of getting it.
(D) To prevent the loss of bone density, you should quit smoking from now on.
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統計： A(1), B(16), C(226), D(10), E(0) #888170
統計： A(1), B(16), C(226), D(10), E(0) #888170
