牙髓失活时,把亚砷酸失活剂放于邻面,由于封闭不严、药物渗漏可引起() A.药物性根尖

题型:单项选择题 B1型题

问题:

牙髓失活时,把亚砷酸失活剂放于邻面,由于封闭不严、药物渗漏可引起()

A.药物性根尖周炎

B.咬合创伤

C.残髓炎

D.药物性牙周组织坏死

E.慢性根尖炎

考点:口腔执业助理医师牙体牙髓病学牙体牙髓病学题库
题型:单项选择题 B1型题

装配式混凝土涵洞涵节内外壁表面如有蜂窝麻面,每处面积不得大于3.0cm×3.0cm,深度不得超过1.0cm,总面积不得超过全面积的(),并不得露筋。

A、1%

B、2%

C、3%

题型:单项选择题 B1型题

— What does your boyfriend do?  

— _________.  [ ]

A. He's a bank clerk

B. He's in a hospital

C. He does homework

D. He plays soccer

题型:单项选择题 B1型题

It is not unusual for people to speak two or three languages; they’re known as bilinguals or trilinguals. Speakers of more than three languages are known as polyglots. And when we refer to people who speak many languages, perhaps a dozen or more, we use the term hyper-polyglot.

The most famous hyper-polyglot was Giuseppe Mezzofanti, a 19th century Italian cardinal, who was said to speak 72 languages. This claim sounds absurd. If you assume each language had 20,000 words, Mezzofanti would have to learn a word a minute, six hours a day, for eleven years—an impossible task. But Mezzofanti was tested by critics, and they were all impressed.

Did Mezzofanti have an extraordinary brain? Or are hyper-polyglots just ordinary people with ordinary brains who manage to do something extraordinary through hard work?

U.S. linguist Stephen Drashen believes that outstanding language learners just work harder at it and then they acquire unusually strong language ability. As an example, he mentions a Hungarian woman who worked as an interpreter during the 20th century. When she was 86, she could speak 16 languages and was still working on learning new languages. She said she learned them mostly on her own, reading fiction or working through dictionaries or textbooks.

Some researchers argue to the contrary. They believe that there is such a thing as a talent for learning languages. In the 1930s, a German scientist examined parts of the preserved brain of a hyper-polyglot named Emil Krebs, who could speak 60 languages fluently. The scientist found that the area of Krebs’s brain called Broca’s area, which is associated with language, looked different from the Broca’s area in the brains of men who speak only one language. However, we still don’t know if Krebs was born with a brain ready to learn dozens of languages or if his brain adapted to the demands he put on it.

Although it is still not clear whether the ability to learn many languages is in born, there’s no doubt that just about all of us can acquire skills in a second, third, or even fourth language by putting our mind to it.

小题1:What does the underlined sentence imply?

A.Mezzofanti could remember 360 words a day.

B.Mezzofanti had a special way to learn languages.

C.Mezzofanti’s achievement was ridiculous.

D.Mezzofanti language ability was astonishing.小题2:The Hungarian woman became a hyper-polyglot mainly because of her __.

A.good memory

B.hard work

C.unique brain

D.learning methods小题3:The German scientist’s findings showed that Krebs ___.

A.had an unusual brain

B.was born with great talent

C.had worked hard at languages

D.expected too much of himself小题4:The author seems to agree that ___.

A.it is not hard to learn foreign languages

B.hard work plays a part in language learning

C.there is no such thing as a talent for languages

D.hyper-polyglots have an inborn talent for language

题型:单项选择题 B1型题

当用户名及口令错误输入()次后,该用户将被锁定。

A.2

B.3

C.4

D.5

题型:单项选择题 B1型题

下面关于审慎的说法中,错误的是

A.它是一种道德品质
B.它是一种处事态度,由个人的性格特点决定
C.有利于医疗质量的提高,并防止医疗差错事故
D.有利于良好职业道德的培养
E.可促使业务能力和技术水平提高

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