题目内容
3.Let's face it.No one drinks diet sodas for the taste.People drink diet sodas in the hope that it will help them lose weight or at least keep them from gaining it.Yet it seems to have exactly the opposite effect,according to a new study.Researchers from the University of Texas said those who drank two or more diet sodas a day had waist size increases that were six times greater than those who didn't drink diet sodas."What we saw was that the more diet sodas a person drank,the more weight they were likely to gain,"said Sharon Fowler.
The study was based on data from 474 participants in a large,ongoing research project,where the participants were followed for nearly 10 years.
While the findings are surprising,they also offer some explanations.
Nutrition expert,Melanie Rogers,who works with overweight patients in New York,has found that when patients are switched from regular to diet sodas,they don't lose weight at all."We weren't seeing weight loss necessarily,and that was confusing to us,"said Rogers.
So why would diet soda cause weight gain?No one knows for sure yet,but it could be that people think they can eat more if they drink diet sodas,and so over-compensate(弥补) for the missing calories.
A related study found some sweeteners (甜味剂) raised blood sugar levels in some mice."Data from this and other potential studies suggest that the promotion of diet sodas and artificial sweeteners may be risky,"said Helen P.Hazuda,professor at School of Medicine of the University of Texas."They may be free of calories,but not of consequences."
25.People drink diet sodas toC.
A.enjoy its taste
B.stay in fashion
C.achieve weight loss
D.gain more energy
26.We can learn from the passage thatB.
A.regular sodas make people lose more weight
B.diet soda drinkers tend to eat more food
C.diet sodas do help reduce calories
D.most blood diseases come from diet sodas
27.The underlined word"They"in the last paragraph probably refers to"B".
A.sweeteners
B.diet sodas and artificial sweeteners
C.sodas
D.diet soda drinkers and sweetener takers.
分析 本文是科教类文章,主要讲述了人们为了减肥而喝苏打水,可是最新的研究却表明:喝苏打水不仅不能让人减肥,反而可能让人更胖,并分析了原因.
解答 25.C.细节理解题.根据第一段中的"Peopledrink diet sodas in the hope that it will help them lose weight…"可知,人们喝苏打水是为了减轻体重,故选C.
26.B.推理判断题.根据倒数第二段中的"…they can eat more if they drink diet sodas…"可知,如果他们喝苏打水,人们认为他们可以吃得更多,所以喝苏打水的人倾向于吃更多的食物.故选B.
27.B.词义猜测题.此处是承接上一句中的内容,可知They 指代前面提及的dietsodas and artificial sweeteners.(苏打水和人造甜味剂).故选B.
点评 本文是科教类阅读理解.做这类题材阅读理解时要求考生对文章通读一遍,做题时结合原文和题目有针对性的找出相关语句进行仔细分析,结合选项选出正确答案.推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案,切忌胡乱猜测,一定要做到有理有据

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