【C14】
A. fall
B. fell
C. falls
D. has fallen
The author mentions "maths students" as an example to show______.
A. its significance in the study
B. an inherent pattern being learnt
C. its resemblance to the lights
D. the importance of night"s sleep
【C10】
A. what
B. since
C. as
D. that
【C17】
A. meanwhile
B. unless
C. whereas
D. for
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