49. The main idea of Paragraph 5 is that _________.
(A) people should probably sleep more than they do
(B) Americans on average sleep less than they did 20 to 30 years ago
(C) people die if they don't get enough sleep
(D) people get sick because they don't sleep enough
(E) people need enough food and exercise as much as they need sleep

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統計: A(27), B(8), C(1), D(21), E(10) #2751944

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#6013037
 He noted that with ...
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#7244287
這是一道典型的英語閱讀測驗「段落大意(M...
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