单项选择题

The main idea of paragraph 3 is that()

A. workers now take examinations  
B. the population has grown
C. there are only written exams today 
D. examinations are now written and timed

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Whether the problem is due poor manufacture or damage in transportation is not yet clear. We should like to point out that we feel this to be entirely your responsibility.
单项选择题
37()

A.way 
B.places 
C.words 
D.expression
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