单项选择题

From Dr Rattan's point of view, the results of calorie restriction in the CALERIE study ______.

A．were doubtable whether they were valid or not
B．did not show the effect in preventing age-related diseases
C．failed to prove the effect in increasing average lifespan
D．could not testify the effect in changing maximum lifespan

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热门试题

单项选择题

The peasants in India call for a reform on land ownership because ______.

A．they do not have enough fields to support their families
B．their interests are severely infringed by the fast expansion of urban areas
C．their rights to own a piece of land have been taken by the government
D．they are losing land without getting any money from the government

单项选择题

In the context of the passage, set his sights high (Line 1, Para. 3) means that President Kalam ______.

A．has pictured a bright future for his citizens
B．sees hope in solving the social problems in near future
C．is ambitious to handle both domestic and foreign affairs
D．is farsighted to plan the future developments of his party