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问题 单项选择题 A2型题

患儿男，7岁。深龋洞，探诊已穿髓，有疼痛反应，无叩痛，X线片显示：根尖孔呈漏斗状，治疗方法应首选()

A.干髓术

B.活髓切断术

C.牙髓摘除术

D.牙髓塑化术

E.直接盖髓术

答案

参考答案：B

解析：该题考查的知识点是年轻恒牙牙髓病的治疗特点。7岁患儿下颌第一恒磨牙为6岁时萌出的年轻恒牙，牙根尚未完全形成，X线片见根尖孔呈漏斗状。根据病例提供的深龋、探诊已穿髓、有疼痛反应、无叩痛情况，患牙的疾病为慢性牙髓炎，根尖周组织尚未波及，治疗方法应首选活髓切断术，目的是尽量保存患牙根尖部的牙 * * ，使根尖部能继续形成。由于患慢性牙髓炎，直接盖髓术已不宜选择；干髓术、牙髓摘除术和牙髓塑化术均不保存活髓，不应为首选的治疗方法。

阅读理解

In America, when people say ‘man’s best friend’, they don’t mean another person. Instead, they are talking about a lovely animal—a dog! These words show the friendship between people and animals. Dogs and other pets can give joy to people’s lives. Some people even leave all their money to their pets when they die!

Animals can help people, too. You can teach dogs to be the ‘eyes’ for blind (失明的) people or ‘ears’ for deaf (聋的) people. Scientists have found that pets help people live longer! They make people happier, too. Because of that, they bring animals into hospitals for ‘visits’.

Americans have ‘Be Kind to Animals Week’ in the first week of May. There are many pet shows during the week. Even if you don’t live in America, you can also show your love to animals. How? First think about how animals make your life richer (更丰富). If you have a pet, take more time this week to play with it. Remember to give it nice food. If you don’t have a pet, be kind to

animals around you. For example, if you see a street dog, don’t kick it. Just leave it alone, or make friends with it. If others around you do bad things to animals, try to stop them. As people, we must protect (保护) animals because they can’t speak for themselves.   

小题1:From the sentence ‘Some people even leave all their money to their pets when they die!’, we know that _________.

A．pets also like to get money

B．money can make pets happy

C．it's the best way to spend money

D．some pets are as important to their owners as their children小题2:According to the passage, scientists bring the dogs to hospital because _________.

A．they are ill and they need to see the doctor

B．they can make the sick happier

C．they can help the doctor find out the problems

D．all the doctors like them小题3:Which of the following is NOT true?

A．Dogs can help people in many ways.

B．Dogs can help people live happier.

C．Dogs can help people make everything.

D．Dogs can make people’s lives richer.小题4:What is the main idea of the passage?

A．Animals are man’s good friends.

B．Dogs are too noisy.

C．Pets are lovely and needn’t care and protection.

D．We have done a lot of things for pets.
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阅读理解与欣赏

阅读下文，完成问题。

　　盛氏园畜二母鸡，黄白各一，桑麻掩映，分栅而栖，各养数雏。晨夕挈雏出入，二雌同行，宛如人之洽比其邻者。一日，黄者被人窃去，失母之雏，悲鸣不已。白者频来顾视之，若代为悯恻然。自后得食相呼，归栖逐队，盖亡形于黄白，而皆视为己子矣。

　　鸡虽微禽，而于五德之外，竞复具一德。盛之友访盛而见之，呼之为“慈鸡”。

【注】五德：指仁、义、礼、智、信。

1．解释下列句中加粗的词。

（1）而皆视为己子矣（　　）

（2）竟复具一德（　　）

2．用现代汉语翻译下面的句子，注意加粗词的含义。

白者频来顾视之。

_________________________________________

3．表现“二母鸡”和睦相处的句子是：_________________。（用原文语句回答）

4．文中的“一德”指的是_________________。
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