The dental hygiene includes all of the following EXCEPT______.

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问题 The dental hygiene includes all of the following EXCEPT______.
  
Interviewer(M)Liz Vaccariello(W)
M: All smiles this beautiful Monday morning. This morning on Today’s Health: how to achieve that glowing smile by changing just a few everyday habits. Liz Vaccariello, the editor in chief in Prevention Magazine, is here to fill us in on some of the surprising effects some foods have on your smile. Good morning. Thanks for being with us today.
W: Good morning.
M: So the first things first. To achieve that beautiful smile, it’s all about daily hygiene, dental hygiene.
W: Right!
M: Help us out with what we need to know.
W:(1)There’re four things you should do: you should brush twice a day, floss once a day, avoid sugary snacks and see your dentists regularly. He or she will tell you how often that is, but for most of us, that’s twice a year.
M: It’s the flossing that holds a lot of people up. They forget to do it on the daily basis.
W: Yes.
M: There’re some alternative approaches as well that you’re going to help us out. We’ve been joking about the power of cheese, but from what I’ve read, it’s pretty significant.
W: Right.(2 - 1)If you have a big meal, rich in carbohydrates in particular, researchers say a piece of cheese will boost saliva, wash away the acids in the mouth, and the minerals in cheese will help strengthen the tooth from inside out.
M: Important to know that(2 - 2)it’s not any kind of cheese that will work, for example, cheddar. For breast-breed, we’re not recommending it. You have lots of news for other people as well.
W: Right.
M: Drinking out of a straw. Another piece of advice. We’ve chosen environmentally-friendly straws on these days.
W: That’s right. All of us want a big Julia Roberts’ megawatt smile. People, who are concerned about tooth-staining in particular, use straws to limit the amount of time the liquid,(3 - 1)which has a deep color, is exposed to the tooth.(3- 2)But people don’t know that often sugary drinks, sodas, even sugar-free sodas have acids that can cause harms to the enamel.
M: And(3-3)coffee is well for coffee drinkers in the morning. Is that something you recommend through straws?
W:(3 - 4)Absolutely. If you care about oral health and staining in particular.
M:(3-5)Perhaps red wine is not going to look as good through a straw, but it could probably work for you as well.
W: Not sophisticated. That’s right.
M: Vitamin C is something we walk away through with the orange juices in the morning. It’s good for boosting immune systems.
W: Right. Researchers studied this and found that(4)people who got less than 60 milligrams a day of Vitamin C had a 25% higher chance of getting gum disease. So you should go for a minimum of 75 milligrams of C a day, upward limit of 2,000 milligrams.(5 - 1)So, one orange contains about 80 milligrams. You may want a supplement.
M: Yes. Supplements are going to help you out here as well. So, move along, you’re going to talk to us a little bit about calcium, right? Obviously, how many is it for a day? Do you think that 800 milligrams is recommended?
W: 800 milligrams? Exactly. 99% of the calcium in our bodies is in our bones and our teeth. And 1,000 milligrams a day is what you should for. If you don’t get enough everyday, it can cause severe gum disease.
M: And as we look at the soymilk, a lot of people become more and more interested in soymilk and a lot of the health food stores. Is that the same as regular milk in terms of its benefits to you?
W: Yes. You should check the label for the amount of calcium. A woman or a man under 50 should get about 1,000 milligrams and 1,200 to 1,500 milligrams if you’re over your fifties.
M: Okay. There’s a lot of concern on dairy products, for example yogurts. If you have the yogurt, you can get a lot of sugar, calcium and other things which could benefit body in the morning.
W: That’s right.(5-2)There’s a lot of power to dairy products when it comes to the mouth.
M: Speaking of power, the power of tea is critical. Help me out understanding the power of tea.
W: Well.(5 - 3)Both green and black teas contain compounds that prevent plaque from forming. They also contain compounds that prevent bad breath because they address the bacteria.
M: Tea’s good for our health.
W: Yes, it is. And in fact, tea, both the leaves and the water contain some substances which can enhance the tooth enamel.
M: OK. As we go over, we can see that you also set this out for us as well, say the mushrooms. I think this is the ultimate and alternative approach.
W: Right.(5 - 4)Mushrooms contain compounds that address and eliminate the bacteria in your mouth, which prevent cavities. You should also take a look at the sugar-free gums that contain something called xylitol, which numerous studies have shown prevents cavities from forming.
M: Yes, it’s good stuff. Liz Vaccariello, thank you. We appreciate your time today. Thanks for joining us.
W: Pleasure.

选项 A、mineral water
B、coffee
C、wine
D、sugar-free sodas

答案A

解析 本题设题点在对话问答处。根据句(3—1)可知,建议最好用吸管来喝颜色较深的饮料;根据句(3—2)可知,含糖的饮料、苏打水甚至无糖的苏打水都含有对牙釉质有害的酸性物质,因此建议用吸管饮用,故排除[D];根据句(3—3)可知,因为咖啡是颜色较深的饮料,所以建议用吸管来喝,故排除[B];根据句(3—5)可知,红酒最好用吸管来喝,虽然看起来不太雅观,故排除[C]。因此[A]为正确答案。
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