单项选择题

What can be inferred from the passage about the route to long life

A．It remains to be studied.
B．It has already been discovered.
C．Eating more leads to long life.
D．Eating less leads to long life.

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单项选择题

The attitude of those concerned in the UK to the new rules proposed by ISU can be best described as

A．indifferent.
B．reserved.
C．enthusiastic.
D．positive.

单项选择题

What does Jerry Bingham express by saying 1 remain to be convinced

A．His anger.
B．His criticism.
C．His agreement.
D．His doubt.

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