试题与答案

患者,男,34岁,半年前右上4曾做过金瓷冠修复,现颊侧牙龈红肿、疼痛、常嵌塞食物,检

题型:单项选择题 A1型题

题目:

患者,男,34岁,半年前右上4曾做过金瓷冠修复,现颊侧牙龈红肿、疼痛、常嵌塞食物,检查发现颊侧颈部龋,最可能的原因是()

A.修复体边缘不密合

B.修复体边缘过短

C.修复体边缘过长

D.牙冠解剖形态不符合要求

E.口腔卫生差

答案:

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参考答案:A解析:本题考核的是道路交通安全影响因素。影响道路交通安全的因素包括人、车、路和环境四大类。在四要素中,驾驶人是系统的理解者和指令的发出者和操作者,他是系统的核心,其他因素必须通过人才能起...

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题型:阅读理解

“In my day, we had to walk a mile to school—uphill, both ways.” That may sound like an old joke. Today, only 13 percent of kids walk to school, down from 66 percent 30 years ago.

Studies show that fewer children are walking and biking to school, and more children are at risk of becoming overweight. Changing behaviors of children and parents require creative ways that are safe and fun.

A walking school bus can be both.

It works like a bus, picking up ‘passengers’ along the way at designated(指定的) ‘bus stops’ except everyone is walking!

The Walking School Bus works as a supervised group of children walking to and from school along a safe and enjoyable set route. There are at least two parents in a group. One parent ‘drives’ at the front of the bus, while the other parent supervises at the back. The same of different supervisors go with the children to and from school. Additional(增加的) parents may be needed depending on the walking environment.

The ‘bus’ can go as often as parents want to ‘drive’ it and children want to use it. This means that it can even work as little as one morning or afternoon each week. All children are welcome to join the bus even if their parents cannot be drivers. And the service is free.

Socially, it’s great because the children meet other children, otherwise they would only know by sight.

“My children have formed some good friendships because of the Walking Bus. The parents get to know other parents too!” a parent said. “From our experience of the Walking Bus, it has only been a meaningful thing. It gets all of us walking more and the children do not complain about walking like they used to. ”

Some kids said compared to walking school bus, it’s boring in a car when they were asked why not get into a car.

Besides these, it might have a good effect on heavy traffic.

小题1:How many students walked to school 30 years ago?

A.66 percent.

B.13 percent.

C.30 percent.

D.53 percent.小题2:What does the underlined word “supervised” mean in the passage?

A.controlled

B.explored

C.required

D.improved小题3:What can the Walking School Bus NOT do to help the children __________.

A.make more friends

B.reduce the risk of being overweight

C.exercise more

D.complain about walking小题4:The best title of this passage is “__________”.

A.A new way to exercise

B.A new school bus

C.A walking school bus

D.Parents’ driving school bus

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