问题 单项选择题 共用题干题

患者女,68岁,全牙列缺失,拟行全口义齿修复,全口义齿排牙完成后需要口内试戴,除要求有良好的咬合关系和平衡牙合外,对义齿基托蜡型也有严格要求

基托磨光面的固位形是指()

A.基托唇颊面隆起形成牙根部的外形

B.基托唇颊面形成与自然牙相似的牙龈外形

C.在基托磨光面的唇颊舌腭面形成的凹面

D.在基托磨光面的唇颊舌腭面形成的凸面

E.龈外展隙

答案

参考答案:C

阅读理解

SANTO DOMINGO, Domincan Republic ---An infant girl born with a second head bled to death Saturday after complex surgery (外科手术) to remove her partially formed twin , her parents and doctors said.

A medical team completed the 11- hour operation Friday night and said 8-week-old Rebecca Martinez died seven hours later. Doctors had warned after the surgery that the girl would be at great risk of death.

“ We knew this was a very risky surgery , and now we accept what God has decided , “ Rebecca’s father , 29-year-old Frankin Martinez, said at a news conference with his wife. “ Rebecca is no longer with us physically , but no one will forget her.”

Martinez said the family would bury Rebecca in a private funeral later in the day.

The girl lost a lot of blood in the operation, which apparently ( 明显地) caused her to suffer a heart attack , said Dr. Jorge Lazareff , the lead surgeon . Friends and family donated (捐赠) almost 4 gallons of blood for surgeons to use Rebeca’s operation

“This was not a failure or an error ,” Lazareff said . “ When we left here last night the girl was in stable condition. At some point in the middle of the night , she started to bleed.”

Rebecca was born Dec. 10 with the undeveloped head of her twin, an exteremely rare condition known as craniopagus parasticus . Rebecca was the eighth documented case in the world of craniopagus parasiticus, doctors said.

All the other infants documented to have had the condition died before birth , making Rebecca\s surgery the first known operation of its kind.

Without an operation , Rebecca would have barely been able to lift her head at 3 months old. Her doctors said the pressure from the second head would have prevented her brain from developing.

“ We always saw Rebecca without the extra part of her body, ”er father said after her death.

Rebecca was their third child-----along with a 4-year-old boy and a 1-year-old girl.

小题1:The underlined word “infant “ most probably means____________________.

A.a disabled child

B.a newly-born child

C.a 2-headed child

D.a very young child小题2: Rebecca Martinez died ________________________after she went to the operation table.

A.8 weeks

B.11 hours

C.7 hours

D.18 hours小题3: Which of the following statements is NOT true according to the text?

A.Rebecca died because mistakes happened during the operation

B.Rebecca most probably died of bleeding

C.Rebecca was her parents’ third child

D.Without an operation , Rebecca would have little hope of living小题4: Which of the following would be the best title of the passage?

A.Infant Girl Dies After 2nd Head Removed

B.Rebecca , Hiciano’s Third Child

C.The Death of a Gril With two Heads

D.Rebecca’s Surgery, the First Known Operation

问答题 简答题