( )5. How many ways are mentioned(提及)to help you stay healthy?
A. Two. B. Three. C. Four. D. Five.
( )6. Which of the following sentences can be put in the blank “______▲______” in paragraph 3?
A. Blue light can control(控制)your sleep. B. Your brain controls the clock. C. This clock should always be the same. D. You must try to follow the 24-hour clock.
( )7. The underlined part “trick your body into thinking it's daytime” in paragraph 4 means “______”.
A. tell your body to go to bed early B. help your body tell the day and the night C. tell your body the coming of the daytime D. make your body mistake(混淆)night for day
( )8. The writer uses the note “Fun Fact” at the end of the passage to ______.
A. tell us the best time to go to bed B. introduce us the ways to get enough sleep C. advise us to go to bed at the same time D. tell us the importance of getting enough sleep
( )9. You may read the passage in a ______.
A. science magazine B. travel diary C. guidebook D. novel

5. B
6. B
7. D
8. C
9. A