选择题：1. According to the passage, lack of sleep for a l

1. According to the passage, lack of sleep for a long while can probably lead to all of the following EXCEPT 回答


.

　　A. heart disease
　　B. weight gain
　　C. diabetes

　　2. The main idea of the third paragraph is 回答


.

　　A. how to write a medical research paper
　　B. how to avoid sleep loss
　　C. how the research was conducted

　　3. What does the “leach” in the last paragraph probably mean?回答



　　A. Leap.
　　B. Lead.
　　C. Leak.

　　4. Which of the following is NOT TRUE according to the passage?回答



　　A. We will be in trouble if our fat cells become less responsive to insulin.
　　B. More and more studies are done to study the link between sleep and weight.
　　C. More than 20% of Americans are not getting enough sleep.

　　5. Which of the following is an appropriate title for this passage?回答



　　A. Poor Sleep May Lead to Too Much Stored Fat and Disease
　　B. Sleep Experts Had Exciting Findings in a Fat Study
　　C. Americans Should Have More Than Six Hours of Sleep