单项选择题

This article concludes that ______ contribute to the remarkable long life of these peoples.

A．moderate diets
B．clean mountain air
C．daily hard work
D．all the above factors
<上一题 目录 下一题>
热门 试题

单项选择题
Which of the following best states the main idea of the passage
A．Cold-blooded animals can develop fevers.
B．There are benefits to developing fevers.
C．Fevers inhibit bacterial growth.
D．Lizards can develop fevers.
单项选择题
Scorpions injected with prostaglandins move to hot areas to ______.
A．engage in greater activity
B．seek out a more-iron environment
C．demonstrate that they are ill
D．develop a fever and fight bacterial infections
相关试题