试题与答案

患者男,65岁,因牙髓炎行根管治疗后要求全冠修复,检查见牙冠表面多处因龋充填,牙体无

题型:单项选择题

题目:

患者男,65岁,因牙髓炎行根管治疗后要求全冠修复,检查见牙冠表面多处因龋充填,牙体无松动,无叩痛,余未见异常,拟行金属全冠修复

制作蜡型的轴面时,最需要注意的是()

A.表面应该平整美观

B.轴面应该与对颌牙有良好的接触

C.必须重建正常颊沟的形态

D.恢复合理的轴面突度

E.与邻牙要有良好的接触

答案:

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题型:阅读理解

阅读理解。

     Li Daiyu and her cousin Liu Qian were on a trip to Canada to visit their cousins on the Atlantic coast.

Rather than take the aeroplane all the way, they decided to fly from China to Vancouver and to take the

train from west to east across Canada in September.The idea that they would cross the whole continent

was exciting.

     Their friend, Danny Lin,was waiting for them at the airport. He was going to take them to catch 'The

True North', the cross-Canada train.On the way to the station, he told them, 'You're going to see great

scenery on your trip. Canada is bigger than the United States. It is second biggest country in the world

and as you go eastward, you will see mountains and pass thousands of lakes,forests and wide rivers as

well as cities.The idea that you can cross Canada in less than five days is just wrong. It is 5,500

kilometres from coast to coast.Here in Vancouver,you are in the warmest part of Canada.Many people

think it is the most beautiful city in Canada,as it is surrounded by mountains on the north and east and the

Pacific Ocean on the west.Its population is increasing very rapidly, because the mountain-and-sea city is

a very popular place to live in.Even people from Japan come to settle down here.

     That afternoon on the train the cousins settled down in their seats. They crossed the Rocky Mountains

earlier that day and looked out of the windows at the wild scencry.They saw mountain goats and even a

grizzly bear.Their next stop would be Calgary.The Calgary Stampede is a famous Western festival,

Cowboys come from all over North America to compete in riding wild horses.Many of them have a gift

for working with animals and they can win thousands of dollars in prizes.

     That night,they slept as the train rushed through the night across the top of Lake Superior.through the

great forests and southward towards Toronto.

1. How did Li Daiyu and Liu Qian arrive in Canada?

A. They sailed across the Pacific Ocean.        

B. They flew to Vancouver.

C. They took a train to Vancouver.              

D.  They flew to the Atlantic coast.

2. Witch order is right of their train trip?

A. Vancouver  Calgary   Lake Superior  Toronto

B. Toronto   Vancouver  Calgary   Lvake Superior

C. Vancouver  Lake Superior   Calgary   Toronto

D. Lake Superior    Vancouver   Cvalgary   Tvoronto

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