题目内容
（请给出正确答案）
A．California dental schools.
B．A little-known fact about George Washington.
C．Uses of animals in research.
D．George Washington's sleep habits.
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更多“A．California dental schools.B．…”相关的问题
A.palatal, velar, glottal
B.bilabial, labiodental, dental
C.stop, fricative, affricative
D.nasal, lateral, semi vowel
A. non-retentive restorations
B.retentive restorations
C. resin-bonded fixed dental prostheses
D. inlay-retained fixed dental prostheses
His father was () a farmer, but decided to become a dental technician instead and moved the family to California.
A. initially
B. finally
C. compulsively
D. excessively
A、Pets
B、Books
C、Trips
D、Dental appointment
听力原文：M: Hi! Dr. Hyde？
W: So, what seems to ha the problem today？
M: Well, I just came in for a check up and a dental cleaning.
W: Hum. Open up. Let's take a look.
M: Okay. Uh...
W: Hum. Wow! I've never seen one like this before. Let me try this.
M: Uhhh...Ouhhhh [Man screaming in pain].
W: Well, there is a major cavity in one of your wisdom teeth. Hasn't this given you any trouble？
M: Well, the tooth has been bothering me, and it sometimes hurts when I drink something cold. Does it look that bad？
W: Well, we're going to remove the decay, and then we'll either put a filling in, or if the decay is extensive, we can't repair it, we might have to put a crown on your tooth. Or as a last resort, we may have to extract the tooth.
M: Uh, well, that sounds painful!
W: Don't worry. I've done this once before. Nah, just relax.
M: Wait! Aren't you supposed to give me something to dull the pain？
W: Uh, Oh yeah. I almost forget. We can use a local anesthetic to minimize the discomfort you might feel. Or you can just grin and bear it.
M: Nah, nah, nah! Put me under! I can't stand pain, and I'd rather not be aware of what's going on. And, if I need a filling, can I get one that leeks like my other teeth？
W: If we can save the tooth with a filling, I recommend a high-strength silver alloy filling instead of a porcelain one. It'll probably last longer.
M: Okay, well, whatever. Let's get it over with.
W: Okay, pleasant dreams. Drill please.
(23)
A．He wanted to have a filling replaced.
B．He came in for a dental check up.
C．He came in for some dental advice.
D．He needed to have a tooth pulled.
M: Let's see, Dr. Wilson is fully hooked for Monday and Tuesday, and for Thursday morning. He's taking Wednesday off. Can you fit into free time this week or would you rather have an appointment for next week？
Q: What choice can the woman have？
(17)
A．Tuesday morning is available.
B．Wednesday morning is available.
C．Thursday morning is available.
D．Friday morning is available.
A.This article will not attempt to replicate the above mentioned reviews but will summarize published clinical trials on bonded oxide ceramic restorations and correlate their results with that of laboratory bond strength testing using the same bonding methods as in the clinical trials.
B.The authors of this systematic review concluded, that promising laboratory test results still need to be confirmed by clinical studies before clinical recommendation could be given.
C.Clinical trials with resin-bonded restorations that had no or only limited mechanical retention and were made from alumina or zirconia ceramic were identified using an electronic search in PubMed database.
D.The purpose of this review is to present the best available clinical evidence for successful bonding of dental oxide ceramic restorations.
Sugarless yoghurt (酸奶) could help beat bad breath, tooth decay and gum disease, say scientists. Japanese researchers found eating the yoghurt【62】levels of hydrogen sulphide (硫化氢) -- a major【63】of bad breath -- in 80% of volunteers. The【64】are active bacteria in yoghurt.
Details were【65】at a meeting of the International Association for Dental Research. A(n)【66】of 24 volunteers who participated in the study were given strict instructions【67】oral health, diet and medicine taking. They spent two weeks【68】yoghurts and similar foods, like cheese. Researchers then【69】bacteria levels and odor-causing compounds,【70】hydrogen-sulphide. The volunteers then ate 90 grams of yoghurt a day for six weeks. At the end of the study, researchers took【71】again. They found hydrogen sulphide levels【72】in 80% of participants.
Dr. Nigel Carter, chief executive of the British Dental Health Foundation, said, "The foundation has long been【73】people's attention to sugar-free yoghurts as a healthy snack, so it is pleasing to hear that it may have oral health benefits we were previously【74】of."
"Although this research is still in the early stages there is no【75】that sugar-free yoghurts provide a much healthier【76】to sweets and chocolate, and we would encourage snackers to【77】them into their diet."
【78】, Dr. Carter stressed that the best way to beat bad breath was by【79】a good oral health routine. This involves brushing twice-a-day with fluoride (氟化物) toothpaste, cutting【80】on the frequency of sugary snacks and drinks and visiting a dentist【81】.
(63)
A．increased
B．required
C．averaged
D．reduced
