The rats fed unrestricted diets do NOT
A. have one preventing-aging protein increased.
B. have their cell death increased or doubled.
C. have their DNA fragmentation doubled.
D. have the levels of proteins increase
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Passengers leaving for New York should be ready before
A. I6:38.
B. 17:09.
C. 18:30.
D. 19:45.
与血的生成关系最密切的脏腑是
A. 心
B. 肺
C. 脾
D. 肝
E. 肾
What does the woman mean
A. It is really nice to change it.
B. It has been used for a long time.
C. It is still in good condition.
D. It ought to be replace
下列劳动者心理健康的特征中，( )是心理健康很重要的标志。
A. 智力正常
B. 健全的情绪
C. 行为协调
D. 行为反应适度
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