单项选择题

According to Cynthia Kenyon, anti-aging drugs in the future will ______.

A．extend the average and maximum lifespan
B．be useful to test Dr Rattan's hypothesis
C．cure some diseases related to aging
D．be taken to study their side effects
<上一题 目录 下一题>
热门 试题

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
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
相关试题