患者男性,50岁,2周前发现右下后牙龈有小包。平时无明显不适,曾在外院摄X线片。查:

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问题:

患者男性,50岁,2周前发现右下后牙龈有小包。平时无明显不适,曾在外院摄X线片。查:见右下第一前磨牙咬合面龋洞深,探无感觉,叩痛异常感,右下第一磨牙近中根尖部牙龈上有瘘管。X线片见右下第一前磨牙根尖X透射区不规则,边界模糊。右下第三磨牙前倾阻生,余未见异常。

主诉牙应诊断()

A.根尖囊肿

B.慢性牙髓炎

C.慢性牙周炎

D.根尖肉芽肿

E.慢性牙槽脓肿

考点:口腔颌面外科(医学高级)医学高级(口腔颌面外科)仿真试题十三
题型:单项选择题 共用题干题

A school bus is one that is used to take children to and from school.

In the USA, about 450,000 school buses take more than 25 million children to and from school. The yellow school bus is a US icon (象征). Yellow became the color of school buses in the USA in 1939. Dr. Frank got the good idea. He said it was easy for people to see yellow buses and the black letters on them in early morning or late afternoon. That would make children safer.

There are not many school buses in Britain, and they are not yellow. They have trackers (追踪器) on them, so kids are being tracked while they travel to and from school by bus. The trackers let parents know where the school bus is and whether their kids are on the bus.

Kindergarten (幼儿园) is a difficult time for some kids. It's the first time for them to go away from their parents. To make kids love their school, Japanese kindergartens and schools have colorful buses. The buses can easily make children want to take them--and then, go to school. Even some parents want to take them, too!

School buses are becoming more and more popular in China now.  It saves a lot of time for students to take a school bus. It's said that there will be 3,000 yellow school buses on the road by the end of this year in Chongqing.

小题1:According to Dr. Frank,           school buses are safer for the students.

A.yellow

B.black

C.white

D.colorful小题2:Children in Japan may easily         by taking the school bus.

A.save time

B.love their school

C.play games

D.do their homework小题3:Chinese students will save a lot of time to         to school.

A.walk

B.take a taxi

C.ride a bike

D.take a school bus小题4:This passage is mainly about         .

A.school buses

B.school life

C.popular colors

D.students' safety

题型:单项选择题 共用题干题

下列句子中有语病的一项是(    )  (2分)

A.中国自从加入世界贸易组织10年来,在国际经济体系中的地位获得了突破性的提高。

B.泰州食品安全委员会在肯定我市取得成绩的同时,希望我市要进一步加强食品安全监管工作。

C.联合国气候变化大会承诺到2020年发达国家每年向发展中国家提供至少1000亿左右美元,帮助后者适应气候变化。

D.为期三天的中央经济工作会议指出,“稳中求进”是来年经济社会发展的总基调。

题型:单项选择题 共用题干题

疏散风热,透疹止痒,明目退翳,息风止痉()

A.菊花

B.苍耳子

C.桑叶

D.辛夷

E.蝉蜕

题型:单项选择题 共用题干题

串联电容器的总电容的倒数等于各个电容量倒数之和。()

题型:单项选择题 共用题干题

顶真就是上文的词语、句子用来作为下文的起头,前后首尾相连,上递下接。南朝文学家沈约称之谓()。

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