问题 单项选择题 A3型题

男,58岁,全口牙齿脱落,要求镶牙,经检查,口腔条件良好,拟做全口义齿修复。

后退接触位是全口义齿制作前确定上下颌关系的重要参考位,下列关于RCP的说法错误的是()

A.即铰链位

B.其恒定性依赖于相关韧带的物理性能

C.是髁突的生理性最后位

D.髁突保持在此位置的开闭口运动只有转动无滑动

E.从该位开口至最大,髁突持续转动,无滑动

答案

参考答案:E

选择题
阅读理解

Christian Eijkman, a Dutch doctor, left the Netherlands for the island of Java. Many people on the island had a disease(疾病) called beri-beri. He was going there to try and find a cure.

At first, Eijkman thought some kind of germ (细菌) caused beri-beri. He raised some chickens. He didn’t eat them, but made experiments on them. The local people were quite surprised at that. One day he noticed that his chickens became sick when they were fed the food most Javanese ate — refined white rice (精炼米). When he fed them with unrefined rice, also known as brown rice, they recovered. Eijkman realized that he had made an important discovery — that some things in food could prevent disease. These things were named vitamins (维生素). The Javanese were not getting enough vitamins because they had actually removed the part that contains vitamins. Later, other diseases were also found to be caused by the lack of vitamins in a person’s food.

Today many people know the importance of vitamins and they make sure they have enough vitamins from the food they eat. If they don’t, they can also take vitamin pills.

小题1:The underlined word “cure” in Paragraph 1 probably means ______.

A.a kind of rice

B.a kind of vitamin

C.a kind of germ

D.a medical treatment小题2: Christian Eijkman went to the island of Java to ______.

A.help the Javanese with their illness

B.find ways to grow better crops

C.do some research about the island

D.spend his holiday小题3:Why did Christian Eijkman raise some chickens?

A.To eat them.

B.To give the Javanese a surprise.

C.To carry out his experiments.

D.To make money by selling them.小题4:If a person doesn’t get enough vitamins in his diet, he’d better ______.

A.eat vitamin pills

B.eat more meat

C.eat some chicken

D.eat more rice小题5:We can learn from the passage that ______.

A.beri-beri was caused by chickens

B.Christian Eijkman’s experiment was successful

C.the Javanese didn’t like vitamins

D.the Javanese’s disease was caused by a kind of germ