______ there is a snowstorm or other bad weather ,the bus always comes on time.

A. Because       B. if         C. When       D. Unless

There is a joke among flu researchers: “If you've seen one flu season, you've seen one flu season.” The joke is about the unpredictable nature of the flu virus. Every year it looks different, and every strain (类型) follows its own pattern — it's the reason why new strains like H1N1 are extremely difficult to predict.

Dr. Michael Osterholm is a former adviser to the U.S. Department of Health and Human Services. “I know less about influenza today than I did 10 years ago,” he says in a joking way. “Every stone we've turned over, we get more questions.”

The flu rectums every season and the world experiences terrible pandemics (全国或全世界范围流行的疾病), but researchers still do not understand why some strains infect people and others do not; they are not entirely sure about how the flu is transmitted; nor do they understand why some patients become seriously ill while others develop mild symptoms (症状). As a result, when a new strain shows up — like H1N1 — they often have little information to fall back on, and the lessons of previous pandemics are only somewhat helpful. While researchers are still putting together a complete picture of H1N1, for example, its most striking difference with the seasonal flu is that the elder1y are not the most vulnerable (易受攻击的) population.

Influenza's unpredictable nature makes it a moving target for researchers, says researcher Allison Aiello at the University of Michigan. “Even if we had complete seasonal flu data from the past, it wouldn't be much helpful for a new strain of influenza,” she explains.

Whi1e researchers are frustrated by the holes in their knowledge, they say, however, that the pub1ic--health community is generally doing a very good job responding to H1N1 with seasonal flu data that do exist. Studying influenza, says Osterholm, is “like looking through the windows of a house you can't get into because the door is locked.” Gathering the data researchers do have is like “looking through the windows to get a pretty good picture of what the inside looks like.”

One thing researchers do know for sure: the best way for people to protect against H1N1 is to get the vaccine once it becomes available to them.

What do we learn about H1N1 from the passage?

A. In fact it is not a kind of influenza virus.

B. It is quite possible to predict it in theory.

C. Old people are more likely to contract it than kids.

D. Receiving vaccines will be effective to protect against it.

The underlined phrase “fall back on” in Para. 3 probably means      .

A. rely on       B. pass on       C. col1ect      D. exchange

What do we know about previous seasonal flu data?

A. It is useless to study them.      

B. It is still necessary to study them.

C. They are misleading most of the time.

D. They are much more helpful than expected.

Which of the following could be the best title for the passage?

A. Outbreaks of the flu  B. Symptoms of the flu

C. Mysteries of the flu   D. Risks of the flu

There is a joke among flu researchers: “If you've seen one flu season, you've seen one flu season.” The joke is about the unpredictable nature of the flu virus．Every year it looks different, and every strain (类型) follows its own pattern — it's the reason why new strains like H1N1 are extremely difficult to predict.

       Dr．Michael Osterholm is a former adviser to the U.S．Department of Health and Human Services．“I know less about influenza today than I did 10 years ago,” he says in a joking way．“Every stone we've turned over, we get more questions.”

       The flu rectums every season and the world experiences terrible pandemics (全国或全世界范围流行的疾病), but researchers still do not understand why some strains infect people and others do not; they are not entirely sure about how the flu is transmitted; nor do they understand why some patients become seriously ill while others develop mild symptoms (症状)．As a result, when a new strain shows up — like H1N1 — they often have little information to fall back on, and the lessons of previous pandemics are only somewhat helpful．While researchers are still putting together a complete picture of H1N1, for example, its most striking difference with the seasonal flu is that the elder1y are not the most vulnerable (易受攻击的) population.

       Influenza's unpredictable nature makes it a moving target for researchers, says researcher Allison Aiello at the University of Michigan．“Even if we had complete seasonal flu data from the past, it wouldn't be much helpful for a new strain of influenza,” she explains.

       Whi1e researchers are frustrated by the holes in their knowledge, they say, however, that the pub1ic--health community is generally doing a very good job responding to H1N1 with seasonal flu data that do exist．Studying influenza, says Osterholm, is “like looking through the windows of a house you can't get into because the door is locked.” Gathering the data researchers do have is like “looking through the windows to get a pretty good picture of what the inside looks like.”

       One thing researchers do know for sure: the best way for people to protect against H1N1 is to get the vaccine once it becomes available to them.

What do we learn about H1N1 from the passage?

       A．In fact it is not a kind of influenza virus.

       B．It is quite possible to predict it in theory.

       C．Old people are more likely to contract it than kids.

       D．Receiving vaccines will be effective to protect against it.

The underlined phrase “fall back on” in Para．3 probably means      .

       A．rely on            B．pass on            C．col1ect     D．exchange

What do we know about previous seasonal flu data?

       A．It is useless to study them.     

       B．It is still necessary to study them.

       C．They are misleading most of the time.

       D．They are much more helpful than expected.

Which of the following could be the best title for the passage?

       A．Outbreaks of the flu        B．Symptoms of the flu

       C．Mysteries of the flu         D．Risks of the flu

There is a Web site called the “World Database of Happiness”. It combines and __1__ the results of hundreds of surveys from around the world that have been conducted on life __2__. Most of the findings are predictable, but a few are __3__.

The database makes it __4__ that there is not a strong connection between material wealth and general contentment. It is a cliche(陈词滥调) to say that money __5__ buy happiness, but the old saying seems to be __6__ by research. Many people still cling to the belief that gaining riches will be the answer to all their problems, yet they are probably __7__.

Studies have been __8__ on people who acquired sudden wealth, such as lottery winners. In most cases, after the initial joy had __9__，  people were not left with a sense of lasting happiness. In fact, they __10__ to return to the way they felt before they became rich.__11__ contented people continue to be contented，__12__ those who were miserable in the past sink back into misery.

If material wealth does not bring happiness, then __13__ does? Perhaps happiness has something to do with __14__ you live. The authorities at the World Database of Happiness have surveyed levels of happiness in different __15__. Apparently, people in America, Canada, and Singapore are very happy; people living in India and Russia, not surprisingly, are not happy.

Other surveys consistently point to the importance of relationships. Family relationships，__16__， seem to be the key to long－term contentment. The Web site suggests that __17__ in love and having children are two of the situations that bring the greatest happiness.

Nowadays people look to __18__ as an alternative source of satisfaction. People increasingly spend more time alone watching TV or surfing the Internet __19__ spending time with family. Can technology truly make people happy? It is too difficult to tell, but one thing is sure: If the Web site's research is __20__， time spent with your family is a better investment than time spent making money.

1. A. gamers         B. analyzes     C. uses       D. collects

2. A. condition     B. level        C. style      D. satisfaction

3. A. surprising    B. exciting     C. interesting   D. annoying

4. A. actual        B. true         C. real       D. clear

5. A. can           B. may          C. can't     D. mustn't

6. A. supported     B. carried      C. satisfied  D. served

7. A. correct       B. mistaken     C. foolish    D. stupid

8. A. carried away       B. carried on  

C. carried off         D. carried out

9. A. worn out      B. cut off      C. worn off   D. cut out

10. A. intend       B. tend         C. desire     D. want

11. A. Especially        B. Previously  

C. Actually          D. Totally

12. A. then         B. but          C. so         D. while

13. A. which        B. who          C. what       D. when

14. A. space        B. place        C. where      D. how

15. A. cites         B. countries    C. towns      D. sections

16. A. in surprise       B. in all

C. in fact           D. in particular

17. A. dropping     B. feeling      C. falling    D. stepping

18. A. entertainment      B. information 

C. technology        D. study

19. A. other than         B. more than   

C. or rather           D. rather than

20. A. reasonable         B. simple    

C. adequate          D. accurate

There was a time when，if a lady got into a crowded bus or train，a gentleman would immediately stand up and offer his seat.But now，things are different.Today a gentleman will probably look out of the window or if he feels a bit shy，hide behind his newspaper.Either way，the lady will have to stand until someone else gets off.

You can’t entirely blame men for this change in manners，though.Gone are the days when women could be referred to as weakers without causing trouble.A whole generation of women has grown up demanding equality with men，not just equality in jobs or education，but in social life.Hold a door open for some women and you are likely to get an angry lecture on treating women as weakers unable to open doors for themselves.Take a girl out for meal and she’ll probably insist on paying her share of the bill.On second thoughts，that is perhaps not a bad idea.

It’s no wonder，then that men have given up some ways of politeness and consideration which they used to show towards women.On the other hand，the man’s active politeness is perhaps slowly being replaced by true consideration for the needs and feelings of women，so that men can see women as equal human beings，rather than as weakers or something that can be used to please men.

Maybe it is worth women’s while to stand in the bus or train.

46．Which of the following is true according to the passage?

A．Gentlemen are considered impolite nowadays if they do not offer their seats to a standing woman.

B．A gentleman who doesn’t give his seat to a standing woman should be blamed.

C．Today women do not enjoy the politeness shown actively to her by man but they considered it pleasant in the past.

D．In order to be equal with men，women have to stand in a bus or train.

47．A woman may get angry if a man holds a door open for her because________.

A．she doesn’t like him to wait on her hand and foot

B．women enjoy opening the door themselves

C．she feels herself treated as a weaker

D．she thinks it impolite for a man to do so

48．If a man takes a girl out for a meal，she insists on paying her share of the bill.That means________.

A．she wants to be equal with him

B．she likes him，so she doesn’t want to use his money

C．it’s impolite to have a free meal

D．she has agreed to marry him

49．What do women really need today?

A．Men’s active politeness and consideration.

B．Men’s true consideration for the needs and feelings of women.

C．Trying to win men’s favour.

D．Men’s good manners such as offering their seats and opening the door，etc.

50．The writer most probably is________.

A．a man who thinks the changes are reasonable

B．a woman who wants equality

C．a man who doesn’t agree with the changes today

D．a woman who doesn’t agree with the changes today