D
It is hard to predict（预言）how science is going to turn out, and whether it is really good science, it is impossible to predict．If the things to be found are actually new, they must be unknown in advance．You cannot make choices on this matter．You either have science or you don’t and if you have it you have to accept the surprising and disturbing pieces of information, along with the neat and useful bits．
The only solid piece of scientific truth about which I feel totally confident is that we don’t know enough about nature．Indeed, I regard this as the major discovery of the past hundred years of biology．It is, in its way, a clear piece of news．It would have amazed the brightest minds of the 18th century to be told by any of us how little we know and how strange the way ahead seems．In earlier times, they either pretended to understand how things worked or simply made up stories to give answers．Now that we have begun exploring seriously, we are catching sight of how huge the questions are, and how far from being answered．Because of this, we are sorry．It is not so bad being ignorant（无知的）if you are totally ignorant; the hard thing is knowing in some details the reality of ignorance, the worst spots and here and there the not so bad spots, but no true light at the end of the tunnel nor even any tunnels that can yet be trusted．
But we are making a beginning, and there ought to be some satisfaction．There are probably no questions we can think up that can’t be answered, sooner or later．Within our limits, we should be able to work our way through to all our answers, if we keep at it long enough, and pay attention．
51．Acoording to the writer, really good science________．
A．would surprise the brightest minds of the 18th  century．
B．will help people to make the right choice in advance
C．will produce results which cannot be predicted
D．will bring about disturbing results
52．It can be inferred from the passage that scientists of the 18th century________．
A．thought that they knew a great deal and could deal with most problems of science．
B．knew that they were ignorant and wanted to know more about nature
C．were afraid of facing up to the realities of scientific research
D．did more harm than good in man’s understanding of nature
53．Which of the following is NOT mentioned about scientists in earlier times?
A．They falsely declared to know all about nature．
B．They did not believe in results from scientific observation．
C．They paid little attention to the problems they didn’t understand．
D．They invented false rules to explain things they didn’t understand．
54．What is the writer’s attitude towards science?
A．He is sorry because of the ignorance of scientists．
B．He is delighted because of the latest scientific findings．
C．He is doubtful because of the great difficulties in scientific research．
D．He is confident though he knows well the great difficulties in scientific research．
55．The writer believes that sooner or later________．
A．man can’t deal with all the problems he can find because of the limits of human knowledge．
B．man can find solutions to whatever questions concerning nature he can think up
C．questions concerning nature are outsiede the field of scientific research
D．man can think up all the questions and answer them all．

D

It is the season for long lines and frayed (紧张的) nerves. Here’s how to deal.

Lighten up

Do youreslf a favor and ship(运送) your presents. Nearly every U.S. airline charges a fee to check a bag, so shipping gifts is now cheaper and more convenient than carrying them in your luggage.

Weigh your options

Now knowing what you’re going to pay for your luggage is annoying. So calculate your overweight-luggage fees at home. You can find the fees out in advance by visiting new site Luggage Limits, which provides the latest information on more than 90 airlines.

Leave amateurs（不熟练者） in the dust

Trust us and get to the airport an extra half-hour early. The check-in and security lines are filled with inexperienced fliers, and it’s a hard walking. Plus, if you decide to cut it close, you may not get onto the flight at all. To reduce costs, airlines have reduced on flights and routes. The remaining flights are more likely to be oversold, especially on busy travel days. Fliers who check in early are the least likely to get bumped from oversold flights.

Take it public

The rates for renting a car at the airport have more than doubled over the past year because rental lot inventories(地产) have increased dramatically. True, renting at the airport is convenient, but it’s just not worth it anymore. Unless you really need a car, take public transportation, hop a cab, or beg a friend to pick you up at the airport instead.

Say no to bumper cars

Tell the people picking you up to avoid parking their car. They can hang out in their car for free while waiting to get a call from you when you land. Many airports, including JFK and LAX, now feature this sensible choice.

68.Airlines have reduced flights to_________.

A. deal with crisis                         B. reduce the time for leave

C. lower the cost                          D. provide more job chances

69. We can learn from the passage that____      .

A. taking a taxi at the airport is expensive

B. taxis stay at the airport free of charge

C. cars can park at the airport for free

D. JFK encourages people to take a taxi

70. What’s the best title for the passage?

A. 5 Ways to Survey a Holiday Flight.             B. Good Seasons for Flight

C. Cars at the Airport                     D. How to Board a Flight

D

It is the season for long lines and frayed (紧张的) nerves. Here’s how to deal.

Lighten up

Do youreslf a favor and ship(运送) your presents. Nearly every U.S. airline charges a fee to check a bag, so shipping gifts is now cheaper and more convenient than carrying them in your luggage.

Weigh your options

Now knowing what you’re going to pay for your luggage is annoying. So calculate your overweight-luggage fees at home. You can find the fees out in advance by visiting new site Luggage Limits, which provides the latest information on more than 90 airlines.

Leave amateurs（不熟练者） in the dust

Trust us and get to the airport an extra half-hour early. The check-in and security lines are filled with inexperienced fliers, and it’s a hard walking. Plus, if you decide to cut it close, you may not get onto the flight at all. To reduce costs, airlines have reduced on flights and routes. The remaining flights are more likely to be oversold, especially on busy travel days. Fliers who check in early are the least likely to get bumped from oversold flights.

Take it public

The rates for renting a car at the airport have more than doubled over the past year because rental lot inventories(地产) have increased dramatically. True, renting at the airport is convenient, but it’s just not worth it anymore. Unless you really need a car, take public transportation, hop a cab, or beg a friend to pick you up at the airport instead.

Say no to bumper cars

Tell the people picking you up to avoid parking their car. They can hang out in their car for free while waiting to get a call from you when you land. Many airports, including JFK and LAX, now feature this sensible choice.

68.Airlines have reduced flights to_________.

  A. deal with crisis                          B. reduce the time for leave

  C. lower the cost                           D. provide more job chances

69. We can learn from the passage that____      .

  A. taking a taxi at the airport is expensive

  B. taxis stay at the airport free of charge

  C. cars can park at the airport for free

  D. JFK encourages people to take a taxi

70. What’s the best title for the passage?

  A. 5 Ways to Survey a Holiday Flight.              B. Good Seasons for Flight

  C. Cars at the Airport                     D. How to Board a Flight

D

       It is hard to predict（预言）how science is going to turn out, and whether it is really good science, it is impossible to predict．If the things to be found are actually new, they must be unknown in advance．You cannot make choices on this matter．You either have science or you don’t and if you have it you have to accept the surprising and disturbing pieces of information, along with the neat and useful bits．

       The only solid piece of scientific truth about which I feel totally confident is that we don’t know enough about nature．Indeed, I regard this as the major discovery of the past hundred years of biology．It is, in its way, a clear piece of news．It would have amazed the brightest minds of the 18th century to be told by any of us how little we know and how strange the way ahead seems．In earlier times, they either pretended to understand how things worked or simply made up stories to give answers．Now that we have begun exploring seriously, we are catching sight of how huge the questions are, and how far from being answered．Because of this, we are sorry．It is not so bad being ignorant（无知的）if you are totally ignorant; the hard thing is knowing in some details the reality of ignorance, the worst spots and here and there the not so bad spots, but no true light at the end of the tunnel nor even any tunnels that can yet be trusted．

       But we are making a beginning, and there ought to be some satisfaction．There are probably no questions we can think up that can’t be answered, sooner or later．Within our limits, we should be able to work our way through to all our answers, if we keep at it long enough, and pay attention．

51．Acoording to the writer, really good science________．

       A．would surprise the brightest minds of the 18th  century．

       B．will help people to make the right choice in advance

       C．will produce results which cannot be predicted

       D．will bring about disturbing results

52．It can be inferred from the passage that scientists of the 18th century________．

       A．thought that they knew a great deal and could deal with most problems of science．

       B．knew that they were ignorant and wanted to know more about nature

       C．were afraid of facing up to the realities of scientific research

       D．did more harm than good in man’s understanding of nature

53．Which of the following is NOT mentioned about scientists in earlier times?

       A．They falsely declared to know all about nature．

       B．They did not believe in results from scientific observation．

       C．They paid little attention to the problems they didn’t understand．

       D．They invented false rules to explain things they didn’t understand．

54．What is the writer’s attitude towards science?

       A．He is sorry because of the ignorance of scientists．

       B．He is delighted because of the latest scientific findings．

       C．He is doubtful because of the great difficulties in scientific research．

       D．He is confident though he knows well the great difficulties in scientific research．

55．The writer believes that sooner or later________．

       A．man can’t deal with all the problems he can find because of the limits of human knowledge．

       B．man can find solutions to whatever questions concerning nature he can think up

       C．questions concerning nature are outsiede the field of scientific research

       D．man can think up all the questions and answer them all．

D

It was a winter morning, just a couple of weeks before Christmas 2005. While most people were warming up their cars, Trevor, my husband, had to get up early to ride his bike four kilometers away from home to work. On arrival, he parked his bike outside the back door as he usually does. After putting in 10 hours of labor, he returned to find his bike gone.

The bike, a black Kona 18 speed, was our only transport. Trevor used it to get to work, putting in 60-hour weeks to support his young family. And the bike was also used to get groceries(食品杂货)，saving us from having to walk long distances from where we live.

I was so sad that someone would steal our bike that I wrote to the newspaper and told them our story. Shortly after that, several people in our area offered to help. One wonderful stranger even bought a bike, then called my husband to pick it up. Once again my husband had a way to get to and from his job. It really is an honor that a complete stranger would go out of their way for someone they have never met before. People say that a smile can be passed from one person to another, but acts of kindness from strangers are even more so. This experience has had a spreading effect in our lives because it strengthened our faith in humanity(人性) as a whole. And it has influenced us to be more mindful. No matter how big or how small, an act of kindness shows that someone cares. And the results can be everlasting.

53. How did people get to know the couple’s problem?

A. From radio broadcasts.                  B. From a newspaper.

C. From TV news.                       D. From a stranger.

54. Which of the following is TRUE?

A. The author used to get to work by bike.

B. Several strangers offered bikes to them, but they only accepted one of them.

C. The author’s husband often parked the bike outside the back door.

D. Somebody had stolen their bike before, but soon returned it to the author.

55. What do we learn from the couple’s experience?  

A. An act of kindness can mean a lot.       B. One should take care of their bike.

C. News reports make people famous.      D. Strangers are usually of little help.

56. Why was the bike so important to the couple?

  A. The man’s job was bike racing.      B. It was their only possession.

  C. It was a nice Kona 18 speed.        D. They used it for work and daily life.