Which of the groups have a higher percentage of over-weight people according to one study?

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问题 Which of the groups have a higher percentage of over-weight people according to one study?
  
W: Why are so many Americans overweight?
M: Well, that’s a good question, Kate. You’d think that with the current fitness craze in the U.S., there wouldn’t be so many over-weight Americans.
W: Just how many people are overweight?
M: About 40% of Americans are overweight. Interestinglv, one study said that low-income groups have a higher percentage of over-weight people than higher income families.
W: Are there any other factors like that in the study?
M: Yes. The study also said that the hotter the climate, the lower the percentage of obese people.
W: That makes sense. When it’s hot, you usually don’t feel like eating a lot.
M: Is that why Japanese people are typically skinner than Americans?
W: Well. Our diet has a lot less fat and oil than American food. And Americans eat a lot more fat than we do.
M: You’re right. And we also eat more sugar and junk food. But there’s another reason why so many Americans are fat.
W: What’s that?
M: Nobody exercises any more—not even kids. The average American home has the TV on for six hours a day!
W: Wow! No wonder you Americans are so fat. You don’t get enough exercise.
M: Yeah, I guess so.
W: You really need to watch what you eat and get some exercise.
M: Hey. I started a diet and lost 10 pounds.
W: So what happened?
M: I quit and gained it all back plus 5 pounds.

选项 A、He lost 5 pounds.
B、He gained 5 pounds.
C、He gained 10 pounds.
D、He gained 15 pounds.

答案D

解析 数字细节题。男士说他过去开始节食了一段时间,减了10磅,但放弃了之后,结果体重不仅反弹了,而且还多了5磅,所以男士是多了15磅,应选D。
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