题目内容
Della finished crying and a to her cheeks with the power rag.
The boy dived into the water and after _________________________ (好像很长时间), he came up again. (what; seem)
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．
The government was in with the unions over pay. Many people went on strike.
A．conflicts B．agreement C．contract D．contact
The Man of Many Secrets-Harry Houdini---was one of the greatest American entertainers in the theater this century. He was famous for his escapes---from prison cells, from wooden boxes floating in rivers, from locked tanks full of water. He appeared in theaters all over Europe and America. Crowds came to see the great Houdini and his “magic” tricks.
Of course, his secret was not magic, or supernatural powers. It was simply strength. He had ability to move his toes as well as he moved his fingers. He could move his body into almost any position he wanted.
Houdini started working in the entertainment world when he was 17, in 1891. He and his brother then performed card tricks in club in new York. They called themselves the Houdini brothers. When Harry married in 1894, he and his wife Bess worked together as magician and assistant. But for a long time they were not very successful. Then Harry performed his first prison escape, in Chicago in 1898. Harry persuaded a detective to let him try to escape from the prison, and he invited the local newspaperman to watch.
It was the publicity that came from this that started Harry Houdini’s success.
Harry had fingers trained to escape from handcuffs and toes trained to escape from ankle chains. But his biggest secret was how he unlocked the prison doors. Every time he went into the prison cell, Bess gave him a kiss for good luck---and a small skeleton key, which is a key that fits many locks, passed quickly from her mouth to his.
Harry used these prison escapes to build his fame. He arranged to escape from the local jail of every town he visited. In the afternoon, the people of the town would read about it in their local newspapers, and in the evening every seat in the local theater would be full. What was the result? Worldwide fame, and a name remembered today.
53．According to the passage, Houdini’s success imprison escape depends on .
A．his magic tricks and inhuman powers
B．his special tricks and a skeleton key
C．his unusual ability and skeleton key
D．his inhuman talents and magic tricks
54．In the fourth paragraph, the word “this” refers to .
A．his first prison escape B．a local reporter’s invitation
C．the place, Chicago D．The time, 1898
55．It can he inferred from the passage that Houdini became successful .
A．before he was about 17 B．when he was about 17
C．after the year 1898 D．before the year 1898
56．According to the passage, which of the following statements is true?
A．Houdini used to be a famous magician in the USA.
B．Houdini was first recognized widely in Chicago.
C．Houdini first entered the entertainment world together with his wife.
D．Houdini owed his great success to his small skeleton key.
He was only twenty-two and to be （负担）with a family.
Online crimes can be committed with or without a computer, an example of ______ is fraud, a crime ______ money is stolen
by cheating others.
A. which; what B. where; which C. which; where D. what; that
The great use of the school education is not so much to teach you things ________ to teach the art of learning.
A. what B. than C. as D. that
―There is no spare chair in the meeting room .Do you still need any?
―Yeah ,I think four chairs are needed for the lecture this afternoon.
A．dozen B．dozens C．dozen of D．dozens of
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