单项选择题

The energy （）by the chain reaction is transformed into heat.

A. transferred
B. released
C. delivered
D. conveyed

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单项选择题

The newly-elected president is determined to______the established policy of de veloping agriculture.

A. go for
B. go on
C. go by
D. go up

单项选择题

The Olympic Games were watched by（）billions of people around the world

A. virtually
B. literally
C. deliberately
D. appropriately

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