问题 单项选择题

男,40岁。下颌左侧第一前磨牙,活髓,MOD嵌体修复,水门汀粘固后第二天出现自发痛,最可能的原因是

A.咬合创伤
B.牙髓充血
C.牙髓炎
D.根尖周炎
E.修复体松动

答案

参考答案:D

解析:咬合创伤一般不会有自发痛,多是咬合痛;牙髓充血表现为冷、热、酸、甜刺激一过性敏感;根尖周炎表现主要是咬合痛、患牙伸长感:修复体松动一般不会出现疼痛;牙髓炎特点是自发痛、夜间痛、冷热刺激痛,可能是由于牙体预备产热、消毒剂、粘固剂的刺激而发生。

阅读理解

People who like travelling have their reasons. They believe that travelling can help them expand their field of view, especially in the geographical and historical sense. They also think that touring will give them more chances to enjoy different kinds of food and experience new things that would never be brought by other activities. But those who dislike travelling also have some reasons.

Travelling, in my opinion, does more good than harm. Most importantly, it broadens(扩大) our mind. We can get in touch with other civilizations(文明), culture, customs and ideas.

Through history, most people travelled because of necessity(必要性)—not for pleasure. People travelled just in order to remain alive. They searched for food to eat or places to live in. They sometimes ran away from enemies. This is not to say that no one ever travelled just for the fun of it. In ancient times, for example, rich Romans travelled all the way to Greece to take part in the Olympic Games, and festivals. Of course, some people decided to travel just out of curiosity(好奇心). They wanted to find out what it looked like beyond the horizon(地平线). Also, business travel has been going on for centuries.Traders could not only make money but also learn to speak several languages and be introduced to different cultures.

So travelling does enrich our mind and draw new ideas to us. There is no doubt that we can get much from it.

小题1:The underlined word“expand”in Paragraph 1 can be replaced by “ __________”.

A.decide

B.protect

C.widen

D.lose小题2:According to the passage, in the past most people travelled _____________.

A.for knowledge

B.to make a living

C.to get experiences

D.for fun小题3:In the writer’s opinion, travelling can be ______________.

A.tiring

B.funny

C.expensive

D.helpful

多项选择题