15.Which of the following questions best summaries the main idea of the whole passage?

A)How does the immune system attack the flu virus?

B)How does the immune system function in our body?

C)How do the lymphocytes work in our body?

D)What is the so?called immune system?

D

“Family” is of course an elastic word.But when British people say that their society is based on family life,they are thinking of “family” in its narrow,peculiarly European sense of mother,father and children living together alone in their own house as an economic and social unit.Thus,every British marriage indicates the beginning of a new and independent family-hence the tremendous importance of marriage in British life.For both the man and the woman,marriage means leaving one’s parents and starting one’s own life.The man’s first duty will then be to his wife,and the wife’s to her husband.He will be entirely responsible for her financial support,her the wife’s parents nor the husband’s,nor their brothers or sisters,aunts or uncles,have any right to interfere with them-they are their own masters.

Readers of novels like Jane Austen’s ?Pride and Prejudice? will know that in former times marriage among wealthy families were arranged by the girl’s parents, that is,it was the parents’ duty to find a suitable husband for their daughter, preferably a rich one, and by skillful encouragement to lead him eventually to ask their permission to marry her.Until that time,the girl was protected and maintained in the parents’ home,and the financial relief of getting rid of her could be seen in their giving the newly married pair a sum of money called a dowry. It is very different today.Most girls of today get a job when they leave school and become financially independent before their marriage.This has had two results.A girl chooses her own husband,and she gets no dowry.

14.Which of the following can NOT be detected by T cells?

A)Thymus. B)Transplants.C)Cancer cells.D)Healthy cells.

13.The last sentence in para 5 “since you began reading this sentence,over 800,000 of them have been created and destroyed” implies that ____.

A)this sentence contributes to the increase of the number of lymphocytes in your body

B)you would not realize that lymphocytes reproduce themselves rapidly but for th is sentence

C)because you read this sentence,a large number of lymphocytes have been consume d

D)the number of lymphocytes in your body is extremely large

12.What does the word “lymphocytes” mean?

A)Food soldiers.B)Flu virus.

C)White blood cells.D)Troublemakers.

11.What is the function of our immune system?

A)To take over our tissues and feed off our bodies’ nutrients.

B)To prevent bacteria or germs from entering the body.

C)To destroy the troublemakers in order that they might not hurt the body.

D)To fight against T cells.

10.Which of the following is true concerning the Tory Party or the Whig Party?

A)The Whig Party no longer exists in Britain.

B)The Tory Party has kept its unity until the present day.

C)The Whig Party has taken the place of the Liberal Party.

D)The Tory Party has taken the place of the Conservative Party.

C

The immune system is the body’s defender.It identifies,tracks down,and destroys troublemakers before they can hurt the body.Those troublemakers may be,for example,bacteria from a cut or splinter,a measles germ,a cold bug,or even a cancer cell.

These invaders try to take over our tissues and feed off our bodies’ nutrients. If they succeed,we become sick or,sometimes,even die.It’s the job of our immune systems to destroy these invaders before they destroy us.

Say you picked up a flu virus(病毒) last week.Perhaps it entered your body through a cut,from a drinking glass,or from the air you breathe.Of course,you didn’t feel it,but the virus made its way into your bloodstream.As soon as it entered your body,it began to reproduce.Viruses have only one goal:to take over your cells.Once inside your body,viruses try to enter cells and disrupt their normal wor k.If left alone,these viruses would hurt so many cells that you would weaken,or worse,get a serious illness.

But this flu virus should not be so complacent as it seems to be.As it reproduces in your bloodstream,the virus is met by a certain kind of white blood cell,the lymphocytes.The lymphocytes are the foot soldiers that keep you alive.

The number of lymphocytes in your body is hard to imagine.Thousands of them could fit in the period at the end of this sentence.Your body holds about a trillion -that’s 1,000,000,000,000 of them,or about 3,000 in every drop of blood.Since you began reading this sentence,over 800,000 of them have been created and destroyed.

Some of these lymphocytes pass through a small walnut?sized organ called the thymus.The thymus is the base of the neck.Here,special hormones(荷尔蒙)turn lymphocytes into fighting cells,called T cells.

T cells have one terrific talent:They can tell the difference between friend and foe;what should be in our bodies and what shouldn’t.They do not affect the body ’s healthy cells.Yet they attack everything that is foreign to our bodies,such as germs, transplants, and even our own cells which have become abnormal,as in the case of cancer.

9.According to the passage,why was the Labour Party established in Britain?

A)Because the trade unions did not do much good for the working people.

B)Because the Liberal Party were not strong enough to defeat the Conservative Party.

C)Because the working people would not like to be members outside the Liberal Party.

D)Because neither of the two major parties was the parties for the working people.

8.What can we infer from the forming of the Tory Party and the Whig Party?

A)These two parties originally believed in different religions.

B)These two parties were established under the influence of different religious believes.[ZK)]

C)The British King and the Parliament supported different religions becaused they were for the two?party system.

D)The British King and the Parliament were supported by different parties for political reasons.

7.We can learn from what P.S Tregidgo once said that ____.

A)if there are parties in Britain,none of them will be strong enough to have con trol in the government

B)the more patients there are,the more likely it is that they will have the deci sive say in the government

C)the two party?system contributes to the establishment of a powerful and long ?lasting government

D)if there are only two parties in Britain,it will be easy for the government to control them

6.What does “it” stand for in the third line?

A)The two?party system.B)The state machine.

C)The Partiament.D)The capitalist state.