1. According to the passage, which one has the least possibility to die early?

1. Sleep less than six hours per night.
2. Sleep more than six hours per night.
3. Sleep between six to eight hours per night.
4. Sleep more than nine hours per night.

2. When someone lack of sleep for a long time, he is apt to have some kinds of diseases EXCEPT ____.

1. heart disease
2. high blood pressure
3. fatness
4. tuberculosis

3. What can we infer from the passage?

1. The longer hours we sleep, the healthier we would be.
2. The shorter hours we sleep, the healthier we would be.
3. People who sleep between six to eight hours wouldn't die early.
4. If someone tends to sleep long hours, then it indicates that there is something wrong with his body.

4. What does "whilst" (Line 5, Paragraph 4) probably mean?

1. Although.
2. Furthermore.
3. Because.
4. Since.

5. Which is the best title of the passage?

1. Sleep and Health
2. Long Hours' Sleep Leads to Die Early
3. Don't Sleep Too Long
4. The Deterioration of Our Health Status

(Reference keys.)