题目内容

  Working the night shift(夜班)a few nights a month can do more than leave your eyes bleary-eyed(视力模糊),suggests a study on Wednesday.

    It just might increase your risk of colorectal cancer(结肠直肠癌).Nurses who worked the night shift at least three times a month for t5 years or more were 35%more likely to develop that type of cancer than nurses who never worked nights,Harvard University researchers report in the Journal of the National Cancer Institute.

    The finding,from the ongoing Nurses Health Study,is the first to link night shift work with a higher risk of colorectal cancer,expected to kill 57,100 Americans this, according to the American Cancer Society.Another research,including a report out of the Nurses Health Study, has suggested that working night shifts increases women's breast cancer risk.

    The researchers asked 78,586 nurses whether they had ever worked three or more night shifts a month.The nurses indicated whether they had done so for less than 15 years or 15 years or more.The scientists followed the women to see who developed colorectal cancer.

    Researchers believe that lowered levels of melatonin(褪黑素)might increase night-shift workers' cancer risk.Melatonin levels usually reach the highest point in the middle of the night.

Turn on the lights,though,and they dropped measurably in just 10 minutes,says Richard Stevens a cancer epidemiologist at the University of Connecticut who did not take part in the new study.After two weeks of continuous nightly exposure to light,humans experience a sharp drop in melatonin production,Nurses Health Study researchers write.

   In the lab,melatonin appears to stop tumor(肿瘤)growth.Other studies suggest that colorectal cancer patients have lower blood levels of melatonin than healthy people,the authors write.However,that could be a result of the disease,not a cause of it.Stevens says.

 

72.Which of the following is NOT caused by working on the night shift?

    A.Bleary eyes.                      B.Colorectal cancer

    C.Melatonin production.        D.Breast cancer.

73.According to the passage,the underlined word“they”refers to         

    A.the lights                         B.melatonin levels

    C.the researchers                D.night-shift workers

74.According to Nurses Health Study,which of the following statements is NOT true?

    A.Working on night shifts will do harm to nurses' health.

    B.Nurses who don't work at night don't suffer colorectal cancer.

    C.Nurses working on night shifts will have a higher risk of colorectal cancer

    D.Working on night shifts will increase women's breast cancer risk

75.Which of the following plays an important part in causing cancers for nurses working night shifts?

    A.Blood levels of melatonin      B.Tumor growth

    C.The exposure to light           D.Melatonin production.

练习册系列答案
相关题目

While I was in 9 th grade, I built a circuit (电路装置) for the traffic system of our city. After getting the first prize. I got this valuable advice from my father; “Do whatever interests you, and don’t let the work challenge you, make sure you are challenging that work.”

I have always preferred the projects which are challenging and related to real life problems. I clearly remember building a shipping program several years ago. I divided the whole project into several small sections. When I understood it clearly, used my brainstorming skill on it, and gave some basic ideas. Then I asked my professor for help before jumping into coding (编码). At first, I did not know how to ask questions correctly and always asked the question “How do I do it?” As I  kept working and discussed with my professor, I became more comfortable and those “how ”questions soon turned into “what if I do this and that” types of questions.

It took me four days to write the code. The desire to solve the problem kept me sleepless all nights brainstorming in even greater details. Every time I saw my program running smoothly, I exploded with joy. I still remember the last day of my work. I was getting some problem and didn’t know what to do. At that moment, a man came in to clean. He has headphones, and he was dancing while cleaning the room. Seeing this, I burst out laughing. That moment calmed me. I regained energy and interest and started to work again, and soon I fixed the problem.

My success in the project proved that breaking up a large problem into small parts could help find a possible solution. Discussing the problem with others was also very beneficial. Now I have gained the confidence to attempt any kind of project.

59.According to the passage, the writer was interested in          .

      A.developing traffic systems

       B.doing challenging projects

       C.winning great prizes

       D.writing different codes

60.The writer asked the question “how do I do it” at first because         .

       A.he had no clear idea about his program

       B.he was too shy to express himself

       C.he wanted to he understood easily

       D.he preferred this kind of question

61.We learn from the passage that the writer’s shipping program         .

       A.would benefit people a lot

       B.was done together with others

       C.was difficult and needed patience

       D.cost much money and energy

62.What would be the best title of the passage?

       A.Do It Yourself

       B.No Pains, No Gains

       C.Learning with interest

       D.Practice Makes Perfect

While I was in 9 th grade, I built a circuit (电路装置) for the traffic system of our city. After getting the first prize. I got this valuable advice from my father; “Do whatever interests you, and don’t let the work challenge you, make sure you are challenging that work.”
I have always preferred the projects which are challenging and related to real life problems. I clearly remember building a shipping program several years ago. I divided the whole project into several small sections. When I understood it clearly, used my brainstorming skill on it, and gave some basic ideas. Then I asked my professor for help before jumping into coding (编码). At first, I did not know how to ask questions correctly and always asked the question “How do I do it?” As I  kept working and discussed with my professor, I became more comfortable and those “how ”questions soon turned into “what if I do this and that” types of questions.
It took me four days to write the code. The desire to solve the problem kept me sleepless all nights brainstorming in even greater details. Every time I saw my program running smoothly, I exploded with joy. I still remember the last day of my work. I was getting some problem and didn’t know what to do. At that moment, a man came in to clean. He has headphones, and he was dancing while cleaning the room. Seeing this, I burst out laughing. That moment calmed me. I regained energy and interest and started to work again, and soon I fixed the problem.
My success in the project proved that breaking up a large problem into small parts could help find a possible solution. Discussing the problem with others was also very beneficial. Now I have gained the confidence to attempt any kind of project.
59.According to the passage, the writer was interested in          .
A.developing traffic systems
B.doing challenging projects
C.winning great prizes
D.writing different codes
60.The writer asked the question “how do I do it” at first because         .
A.he had no clear idea about his program
B.he was too shy to express himself
C.he wanted to he understood easily
D.he preferred this kind of question
61.We learn from the passage that the writer’s shipping program         .
A.would benefit people a lot
B.was done together with others
C.was difficult and needed patience
D.cost much money and energy
62.What would be the best title of the passage?
A.Do It Yourself
B.No Pains, No Gains
C.Learning with interest
D.Practice Makes Perfect

Yousuf Karshthe Canadian portrait artist who photographed many of the most influential figures of the 20th centurydied in a Boston hospital on July l3 th2002He was 93

??? Working from a studio in OttawaKarsh produced famous portraits of such subjects as Winston ChurchillJohn FKennedyErnest Hemingway and Albert EinsteinActually he has become almost as famous as his legendary subjectsIn the latest edition of Who’s Whowhich listed the most notable people of the last centuryKarsh was the only Canadian of the 100 famous people listed——51 0f whom Karsh had photographed

??? As a master portraitistoften working in black and whiteKarsh was famous for talking to his subjects as he was getting the shot’s composition just rightasking them questions and putting them at easeIn preparationhe read as much as he could about the sittersbut avoided having the idea beforehand of how he would photograph themHe sought, as he wrote in Karsh Portfolio in 1967to capture the “essential element which has made them great” explaining“All I know is that within every mall a secret is hiddenand as a photographer, it is my task to reveal it if I can

Karsh was born in America in 1908and his uncleGeorge Nakashbrought him to John Garoall outstanding photographerto teach him in 1928Four years laterKarsh set up his own studio in Ottawa

In December of 1941his memorable portrait of Winston Churchill brought Karsh into international fameCanada’s Prime Minister Mackenzie King arranged for him to photograph Churchill following Churchill’s speech in the House of CommonsNot toldChurchill lit up a cigar, “Why was I not told of this?’’ Karsh asked him to remove the cigar andwhen he didn’tstepped forward and gently removed it with the comment“Forgive meSir”Churchill glowered (怒目而视) as the shot was takenthen permitted Karsh to take still another,jokingly commenting“You can even make a roaring lion stand still to be photographed” The Churchill portrait has since appeared in publications all over the world

??? Karsh traveled to London in 1943 with his portable studio —— an 8-by-10 view camera and many studio lamps to photograph such notables as George Bernard Shaw and the royal familyAll these portraits fully illustrate Karsh’s ability

1.What did Karsh seek to do most in working?

ACapture the essence and greatness of the character

BPresent the true and vivid expression of the subject

CMake the photograph more colorful and expressive

DReveal the idea he has got in preparing for the shot

2.The underlined word “sitters”in Para 3 probably means __________

Acharacters seated????????????? ????????????? ????????????? ????????????? ????????????? ????????????? Bsubjects questioned

Cmodels photographed????????????? ????????????? ????????????? ????????????? ????????????? Dphotographs taken

3.The last three paragraphs are mainly developed by __________

Afollowing time order????????????? ????????????? ????????????? ????????????? ????????????? Bproviding examples

Cmaking comparisons????????????? ????????????? ????????????? ????????????? ????????????? Dgiving causes and effects

4.From the passagewe can learn that __________

AChurchill was asked to stand still when Karsh took a photograph of him

BChurchill’s portrait hanging in the House of Commons gave Karsh great fame

CKarsh was listed as one of the 100 notables by Who’s Who in the last century

DKarsh could skilfully adjust the subjects’ mood when photographing them

 

 

HOLIDAY HOMES IN MALLORCA

    Sailing and fishing in summer season. Beautifully situated houses with sights of sea and mountains, yet near to shops and restaurants. Cars and bicycles for hire. Sailing and sports clubs nearby.

ITALY IN COMFORT

     Coach trips of Italy with 21 days to visit five Italian cities. Start from London 1st May, 1st September. The trips are guided by Professor Martin Davis, head of Italian Studies, London University. See the arts and culture of historic Italy.

KIBBUTZ HOLIDAYS IN ISRAEL

Working holidays on a kibbutz (co-operative farm)in Israel. All nationalities welcome for one to three months, if prepared to work with kibbutz members. Rooms, food and trips to historic sights all provided free—you pay only for the special low-cost return flight.

TWO WEEKS ON A CARIBBEAN ISLAND

Two-week holidays in the Hotel Splendid, on a lovely beach with golden sands, warm sunshine and deep-blue sea. Tennis, golf, sailing and all water sports, trips around the island. Near to town of Castries with lively evening entertainment—dancing.

1 st November—31 st March    £720 per person

1 st April—30 th October      £850 per person

 Jack and his wife Mary, who have recently retired, want to see places of cultural and historic interest abroad, but Mary hates flying.

Peter and Maria, university students, want to travel as far as possible on little money, and would like to get to know a country by working there for three months with other young people.

   Michael, a young computer programmer, has been working hard and needs a holiday to relax in winter. He would like to go somewhere warmer and sunny, where he can swim in the sea, and he enjoys sports and dancing.

1. The best holiday for Jack and Mary would be_________ .

A. the 21-day coach trip of Italy

B. the 2- week stay in the Hotel Splendid

C. the 14-day trip around a Caribbean island

D. 1-3months’ holidays on a kibbutz in Israel

2.The most suitable place where Peter and Maria can enjoy their holiday would be_____.

A. an Italian city                     B. a kibbutz in Israel

C. a Caribbean island                 D. a port in Mallorca

3.Michael would most probably go to ________ for his holiday.

A. Italy          B. Israel            C. Mallorca        D. a Caribbean island

4.Which of the following statements is NOT TRUE ?

A. In Italy, one can travel with a guide.

B. In Israel, one can work with others.

C. In Caribbean, one needs to pay £720 in summer.

D. In Mallorca , one can hire a car for sightseeing.

 

Father Maurice Chase used a special way to celebrate his 90th birthday. The Catholic priest(神父) took $ 15,000 in cash to Los Angeles’ Skid Row (贫民区) and gave it away. Twenty wheelchair – bound people received $100 bills, while the rest received $1to $ 3 each.

“I come out here to tell them that God loves them and I love them and that some one is concerned about them,” Chase said.

Chase has given away cash and blessings every Sunday at the same corner for 24 years.Several hundred people wait for him every week.

He makes a point of coming on Thanksgiving and Christmas, too, but this is the first year he spent his birthday in the downtown neighborhood where people live mainly in shelters and on dirty sidewalks.

    “ It’s the place that makes me the happiest.I just love it,” said Chase. “I look forward to coming here.”

The money comes from donations he receives from rich and famous people he met during his work as assistant to the president of Loyola Marymount University.

The crowd broke into choruses of “Happy Birthday” several times. Some people presented him birthday cards, to his delight.

Travis Kemp, a 51 – year – old disabled man with long black hair, was one of the lucky 20 to receive $ 100. He said he had no special plans for spending the money. “He has a lot of respect from me,” Kemp said. “I know I couldn’t do it.”

1.On his 90 th birthday, Chase      

    A.handed out cash to the needy

    B.collected money for poor people

    C.visited poor people’s homes with gifts

    D.held a party at Los Angeles’ Skid Row

2.Which of the following makes Chase feel the happiest?

    A.Celebrating his birthday with his neighbours.

    B.Working in Loyola Marymount University.

    C.Celebrating Christmas with the people he has helped.

    D.Going to Los Angeles’ Skid Row to help people there.

3.What’s the source of the money Chase used to help people?

    A.All his savings.

    B.His earnings as a Catholic priest.

    C.Donations from the wealthy and celebrities(名人).

    D.Donations from Loyola Marymount University.

4.Travis Kemp is mentioned in the text to show .

    A.he was the luckiest person on that day

    B.the disabled need to be taken care of

    C.Chase is greatly appreciated by the needy

    D.even old people came to celebrate Chase’s birthday

5.Which statement is CORRECT according to the passage?

    A.Every recipient could get $100 in cash from Father Maurice Chase.

    B.Father Maurice Chase gave the cash away not only on his birthday but also on other occasions.

    C.Although Father Maurice Chase gave the cash away on his birthday, he didn’t receive anything in return.

    D.Father Maurice Chase earned a lot of money as assistant to the president of Loyola Marymount University.

 

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网