问题 单项选择题

下列关于同种异基因移植叙述错误的是()。

A.同种异基因移植排斥反应的靶抗原主要是MHC分子

B.同种异基因移植排斥反应是由同种异型抗原识别引发的

C.同种异基因移植排斥反应的靶抗原主要是共显性

D.同种异型识别是对同种异基因移植供者的MHC分子的识别

E.人类决定移植排斥反应的基因定位于第16号染色体的MHC

答案

参考答案:E

阅读理解

Everyone would like to be a millionaire but can you imagine having over S 30 million and only being 20 years old? Britney Spears from Kentwood,a small town in Louisiana,is an international pop superstar with not only S 30 million but also a S 2 million house in LA.At her young age,she can look after her family financially all her life.

This year is a big year for Britney,she is currently on a 31 date tour of the US and every concert is a sell out.That means she plays in front of a crowd of around 18,000 every time.It’s a tiring schedule but brings great rewards.When touring,she goes to bed at around 1 a.m.and then has a lie-in until 1 p.m.or 2 p.m.the next day.Her philosophy (人生哲学) is to take care of the body and be relaxed but always make sure you work hard and have fun.

Spears is not satisfied with only touring and selling nearly 40 million records,so she decided to branch out into the movie business and try a bit of acting.She made an appearance in “Austin Powers 3” in 2002 and she filmed a teenage comedy that was released in 2003.In this movie,she had a starring role.The movie was her own concept and she picked the writer.

In spite of the fact that she has not enjoyed the same popularity as a pop singer so far,she insists on trying more roles.For Britney,acting is another way to express herself and she is enthusiastic about it all.If her movies are successful,her bank account is sure to grow by another few million dollars but she has been quoted as saying she does it for the love,not for money.

64.Tickets for Britney’s concert are ________.

A.booked in groups                         B.too expensive

C.not available                                D.all sold

65.The underlined word “you” in the second paragraph refers to _______.

A.a person in general                       B.a particular person

C.Britney herself only                      D.the reader

66.Which of the following is NOT true according to the passage?

A.Though young,Britney is a superstar both on the stage and screen

B.While touring,Britney is so tired that she has to sleep more than usual.

C.The teenage comedy was based on Britney’s own ideas.

D.Britney will be even more wealthy with her movies successful.

67.According to Britney Spears,she works _______.

A.to be a great actress               B.for the enjoyment

C.to be more famous                        D.for the love of singing

单项选择题