单项选择题

A receptionist typed 8 memos, each either 1 or 2 pages long. If the receptionist typed 12 pages in all, how many of the memos had 2 pages

(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
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单项选择题
The author implies that disrupted sleep can cause disorders such as diabetes (line 15) because()

A.diabetes is linked to obesity
B.sufficient sleep is not crucial to good health
C.diabetes is a serious physical consequence of poor sleep
D.the disorders are probably a result of unbalanced hormone production
E. non-REM sleep is more important than REM sleep

单项选择题
The author implies that car ownership in China is on the rise because()

A.bicycles are seen as old-fashioned
B.Beijing air pollution makes cycling too difficult
C.there are now more wealthy Chinese able to purchase cars
D.bicycles are easier to maneuver on busy streets
E. government measures to increase bicycle use have been largely unsuccessful

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