讨论关于一种人工代糖是否有害。</p>-小站备考

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Directions: You have 20 minutes to plan and write your response. Your response will be judged on the basis of the quality of your writing and on how well your response presents the points in the lecture and their relationship to the reading passage. Typically, an effective response will be 150 to 225 words.

题目原文：

讨论关于一种人工代糖是否有害。

听力材料：

Refute the three explanations mentioned in reading passage.
1. The immune system will be influenced only when sucralose is accumulated in a certain amount.
2. The sucralose cannot be absorbed by human digestive system, and thus it does not have the proper situation to release toxic factors.
3. The kind of sugar will not break down when heated, thus it can be used to make cakes and cookies, and by this way people can enjoy the sugar confectionery as well as keep shape.

阅读材料：

Demonstrate three negative effects of sucralose on human beings
1. The immune system will be influenced, which is proved by the experiment conducted on the mice.
2. The sucralose will release toxic element in our body.
3. The sucralose cannot help people to keep shape, for they might be addicted to this kind of sugar, so actually people might absorb much more sugar.

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Word Count: 0

Time：1 min

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讨论关于一种人工代糖是否有害。

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