单选题

单选题 The question raised in Paragraph 2 is “no mere academic one”__________

A、 because Bonjer's findings are different from Brown's
B、 because sleep normally coincides with the hours of darkness
C、 because some people can change their sleeping habits easily
D、 because shift work in industry requires people to change their sleeping habits

【正确答案】 D

【答案解析】

单选题 According to the passage, the main problem about night work is that__________

A、 people hate the inconvenience of working on night shifts
B、 your life is disturbed by changing from clay to night routines and back
C、 not all industries work at the same hours
D、 it is difficult to find a corps of good night workers

【正确答案】 B

【答案解析】

单选题 According to the passage, the best solution to the problem seems to be__________

A、 not to change shifts from one week to the next
B、 to make periods on each shift longer
C、 to employ people who will always work at night
D、 to find ways of selecting people who adapt quickly

【正确答案】 C

【答案解析】

单选题 In the second paragraph, "the third" means__________

A、 the third week
B、 the third shift
C、 a third of the time
D、 the third routine

【正确答案】 A

【答案解析】

单选题 In the last sentence of the second paragraph, "another" means__________

A、 another routine
B、 another shift
C、 another week
D、 another person

【正确答案】 A

【答案解析】