单项选择题

Pupils often want to sit next to their particular friend and many classroom activities involve moving about, but even relatively small alterations can make ______ to the visual comfort of pupils with sight defects.

A．a difference
B．an interference
C．a modification
D．an impact
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单项选择题
Without Bob's testimony, evidence of bribery is lacking and ______ in the case will be impossible.
A．verdict
B．sentence
C．conviction
D．acquittal
单项选择题
Any person who is in ______ while awaiting trial is considered innocent until he has been declared guilty.
A．jeopardy
B．custody
C．suspicion
D．probation
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