“Zero calories (卡路里) and getting no weight.” We often talk about sugar-free drinks like this. But are they really a good choice?

Some people think sugar-free drinks are healthier because they don’t have sugar or calories. They think having these drinks can help them lose weight.

In fact, sugar-free drinks have some sugar, although very little. Usually, if there is 0.5 grams (克) of sugar or less in a 100-gram drink, it can be described as a sugar-free drink. Although they have little sugar, sugar-free drinks still taste sweet because they use artificial sweeteners (人工甜味剂). But they have very few calories.

When we eat sweet-tasting things like sugar, they hit our brain and make us want more. Our brain tells our body to prepare itself for more sugar. When we drink a sugar-free drink, the brain receives the “sweet message”, but no sugar arrives. Since the brain is fooled, it still wants more sweets.

Some people drink sugar-free drinks instead of water. This is not a good choice. Sugar-free drinks can be bad for our teeth and influence our appetite (食欲).

根据短文内容回答问题。
【小题1】What do some people think having sugar-free drinks can help them do?
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【小题2】Are sugar-free drinks really “zero calories”?
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【小题3】Do sugar-free drinks have sugar?
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【小题4】What happens to the brain when we drink sugar-free drinks? (不超过10个词)
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【小题5】After reading this passage, how do you like sugar-free drinks?
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