A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin cancer, actually increases the risk.
Researchers from the University of Iowa based their findings on a review of 18 earlier studies that looked at the association between sunscreen use and melanoma(黑素瘤). They said that they found flaws in studies that had reported associations between sunscreen use and higher risk of melanoma.
Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helps prevent skin cancer, which is increasing in incidence(发生率)faster than any other cancer in the United States.
But questions have been raised about sunscreen and whether it may have the opposite effect, perhaps by allowing people to remain exposed to the sun longer without burning.
The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin cancer—people with fair skin and freckles(雀斑), for example—are more likely to use sunscreen. As a result, it may appear that sunscreen users get cancer more often.
The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study.The underlined word “flaws” in the 2nd paragraph most probably means .
| A．evidences | B．facts | C．faults | D．failures |
People with fair skin and freckles .
| A．seldom use sunscreen |
| B．are more in danger of skin cancer |
| C．can be free from the harm of the sun |
| D．often expose themselves to the sun |
We can learn from the passage that .
| A．sunscreen users get skin cancer more often |
| B．the volunteers have proved the effect of sunscreen |
| C．the new study was based on the experiences of volunteers |
| D．the number of skin cancer patients is increasing in America |
Which of the following can be the best title for this passage?
| A．Sunscreen to Prevent Skin Cancer |
| B．Sunscreen to Increase Skin Cancer |
| C．Skin Cancer Caused by Sunscreen |
| D．Skin Cancer Caused by Freckles |
Open Letter to an Editor
I had an interesting conversation with a reporter recently---one who works for you. In fact, he's one of your best reporters. He wants to leave.
Your reporter gave me a copy of his resume (简历) and photocopies of six stories that he wrote for you. The headlines showed you played them proudly. With great enthusiasm, he talked about how he finds issues (问题), approaches them, and writes about them, which tells me he is one of your best. I'm sure you would hate to lose him. Surprisingly, your reporter is not unhappy. In fact, he told me he really likes his job. He has a great assignment (分工), and said you run a great paper. It would be easy for you to keep him, he said. He knows that the paper values him. He appreciates the responsibility you've given him, takes ownership of his profession, and enjoys his freedom.
So why is he looking for a way out?
He talked to me because he wants his editors to demand so much more of him. He wants to be pushed, challenged, coached to new heights.
The reporter believes that good stories spring from good questions, but his editors usually ask how long the story will be, when it will be in, where it can play, and what the budget is.
He longs for conversations with an editor who will help him turn his good ideas into great ones. He wants someone to get excited about what he's doing and to help him turn his story idea upside down and inside out, exploring the best ways to report it. He wants to be more valuable for your paper. That's what you want for him, too, isn't it?
So your reporter has set me thinking.
Our best hope in keeping our best reporters, copy editors, photographers, artists---everyone--is to work harder to make sure they get the help they are demanding to reach their potential. If we can't do it, they'll find someone who can.What does the writer think of the reporter?
| A．Optimistic. |
| B．Imaginative. |
| C．Ambitious. |
| D．Proud. |
What does the reporter want most from his editors in their talks?
| A．Finding the news value of his stories. |
| B．Giving him financial support. |
| C．Helping him to find issues. |
| D．Improving his good ideas. |
Who probably wrote the letter?
| A．An editor. |
| B．An artist. |
| C．A reporter. |
| D．A reader. |
The letter aims to remind editors that they should __
| A．keep their best reporters at all costs |
| B．give more freedom to their reporters |
| C．be aware of their reporters' professional development |
| D．appreciate their reporters' working styles and attitudes |
I hated dinner parties. But I decided to give them another shot because I'm in London. And my friend Mallery invited me. And because dinner parties in London are very different from those back in New York. There, '“I’m having a dinner party' means: "I'm booking a table for 12 at a restaurant you can't afford and we'll be sharing the checque evenly, no matter what you eat." Worse, in Manhattan there is always someone who leaves before the bill arrives. They'll throw down cash, half of what they owe, and then people like me, who don’t drink, end up paying even more. But if I try to use the same trick, the hostess will shout: "Where are you going?" And it's not like I can say I have somewhere to go: everyone know I have nowhere to go.
But in London, dinner parties are in people's homes. Not only that, the guests are an interesting mix. The last time I went to one, the guests were from France, India. Denmark and Nigeria; it was like a gathering at the United Nations in New York. The mix is less striking. It's like a gathering at Bloomingdale's, a well-known department store.
For New Yorkers, talking about other parts of the world means Brooklyn and Queens in New York. But at Mallery's, when I said that I had been to Myanmar recently, people knew where it was. In New York people would think it was a usual new clubWhat does the word "shot" in Paragraph 1 probably mean?
| A．Choice. |
| B．Try |
| C．Style. |
| D．Goal |
What does the writer dislike most about dinner parties in New York?
A There is a strange mix of people.
B. The restaurants are expensive.
C. The bill is not fairly shared.
D. People have to pay cashWhat does the author think of the parties in London?
A. A bit unusual
B．Full of tricks.
C．Less costly.
D More interesting.What is the author's opinion of some New Yorkers from her experience？
| A．Easy-going. |
| B．Self-centred. |
| C．Generous. |
| D．Conservative. |
It was a village in India. The people were poor. However, they were not unhappy. After all, their forefathers had lived in the same way for centuries.
Then one day. Some visitors from the city arrived. The told the villagers there were some people elsewhere who liked to eat frog’s legs. However, they did not have enough frogs of their own, and so they wanted to buy frogs from other place.
This seemed like money for nothing. There were millions of frogs in the fields around, and they were no use to the villagers. All they had to do was catch them. Agreement was reached, and the children were sent into the fields to catch frogs. Every week a truck arrived to collect the catch and hand over the money. For the first time, the people were able to dream of a batter future. But the dream didn’t last long.
The change was hardly noticed at first, but it seemed as if the crops were not doing so well. More worrying was that the children fell ill more often, and, there seemed to be more insects around lately.
The villagers decided that they couldn’t just wait to see the crops failing and the children getting weak. They would have to use the money earned to buy pesticides(杀虫剂) and medicines. Soon there was no money left.
Then the people realized what was happening. It was the frog. They hadn’t been useless. They had been doing an important job---eating insects. Now with so many frogs killed, the insects were increasing more rapidly. They were damaging the crops and spreading diseases.
Now, the people are still poor. But in the evenings they sit in the village square and listen to sounds of insects and frogs. These sounds of the night now have a much deeper meaning.From paragraph I we learn that the villagers __________.
| A．worked very hard for centuries |
| B．dreamed of having a better life |
| C．were poor but somewhat content |
| D．lived a different life from their forefathers |
Why did the villagers agree to sell frogs?
| A．the frogs were easy money |
| B．They needs money to buy medicine |
| C．they wanted to please the visitors |
| D．the frogs made too much noise |
What might be the cause of the children’s sickness?
| A．the crops didn’t do well |
| B．there were too many insects |
| C．the visits brought in diseases |
| D．the pesticides were overused |
What can we infer from the last sentence of the text?
| A．Happiness comes from peaceful life in the country |
| B．Health is more important than money |
| C．The harmony between man and nature is important |
| D．good old day will never be forgotten |
Forty years ago Sadie left her drunk and violent husband. Needing shelter (住所）for herself and her young son, she took a job as a doorkeeper in a housing project for people. It meant she could live "on site" in one of the
.
Eventually, she got to know the residents (居民）.One resident, Archie, didn't have a family of his own, his nephew's wife and her naughty kids would drop in from time to time. They were there to help the old guy.
Sadie helped care for Archie as he illness and it was she who called the
who diagnosed (诊断)his deadly cancer.
time passing, Sadie's son
up, got married and settled several hundred miles away. Sadie
and moved into a nice little house of her own. To
the loneliness, she took in a series of
over the years.
A heavy fall of snow came a year and a half ago. She was pleased when a neighbor to walk her current dog, Muffin, until the weather improved. Each day he would
a while talking to her，making sure she was OK, and
if she needed anything.
Although she had known him for a long time, Sadie thought to wonder what his last name was. This morning she asked. His surname was the same
old Archie's. It brought back a memory and she talked about the
. She told him about working at the old residents' flats and was
to discover the man who had been "caring" for her for the past year and a half had been one of the little kids who used to run
on his way to visit "Uncle Archie".
She had cared for his family, now he was caring for her. ② of them knew it until that moment but they were living proof of the old saying, "What goes around comes around, "and the
of kindness will not be broken.
A. poor B. senior C. disabled D. unfortunate
A. groceries B. stadiums C. flats D. cages
A. otherwise B. but C. though D. because
A. battled B. banned C. cured D. beat
A. servant B. master C. neighbor D. doctor
A. As B. Since C. With D. When
A. grew B. got C. went D. came
A. complained B. retired C. fired D. hesitated
A. refuse B. reduce C. stop D. escape
A. programs B. projects C. birds D. dogs
A. attempted B. declared C. offered D. wished
A. spend B. cost C. take D. spare
A. observing B. requiring C. indicating D. checking
A. often B. never C. sometimes D. once
A. to B. from C. as D. of
A. coincidence B. comprehension C. tradition D. statement
A. puzzled B. frightened C. concerned D. surprised
A. calling B. screaming C. barking D. whispering
A. All B. None C. Neither D. Both
A. custom B. glory C. pattern D. circle
We’ve considered several ways of paying to cut in line: hiring line standers, buying tickets from scalpers (票贩子), or purchasing line-cutting privileges directly from, say, an airline or an amusement park. Each of these deals replaces the morals of the queue (waiting your turn) with the morals of the market (paying a price for faster service).
Markets and queues—paying and waiting—are two different ways of allocating things, and each is appropriate to different activities. The morals of the queue, “First come, first served, have an egalitarian (平等主义的) appeal. They tell us to ignore privilege, power, and deep pockets.
The principle seems right on playgrounds and at bus stops. But the morals of the queue do not govern all occasions. If I put my house up for sale, I have no duty to accept the first offer that comes along, simply because it’s the first. Selling my house and waiting for a bus are different activities, properly governed by different standards.
Sometimes standards change, and it is unclear which principle should apply. Think of the recorded message you hear, played over and over, as you wait on hold when calling your bank: “Your call will be answered in the order in which it was received.” This is essential for the morals of the queue. It’s as if the company is trying to ease our impatience with fairness.
But don’t take the recorded message too seriously. Today, some people’s calls are answered faster than others. Call center technology enables companies to “score” incoming calls and to give faster service to those that come from rich places. You might call this telephonic queue jumping.
Of course, markets and queues are not the only ways of allocating things. Some goods we distribute by merit, others by need, still others by chance. However, the tendency of markets to replace queues, and other non-market ways of allocating goods is so common in modern life that we scarcely notice it anymore. It is striking that most of the paid queue-jumping schemes we’ve considered—at airports and amusement parks, in call centers, doctors’ offices, and national parks—are recent developments, scarcely imaginable three decades ago. The disappearance of the queues in these places may seem an unusual concern, but these are not the only places that markets have entered. According to the author, which of the following seems governed by the principle “First come, first served”?
| A．Taking buses. |
| B．Buying houses. |
| C．Flying with an airline. |
| D．Visiting amusement parks. |
The example of the recorded message in Paragraphs 4 and 5 illustrates ______.
| A．the necessity of patience in queuing |
| B．the advantage of modern technology |
| C．the uncertainty of allocation principle |
| D．the fairness of telephonic services |
The passage is meant to ______.
| A．justify paying for faster services |
| B．discuss the morals of allocating things |
| C．analyze the reason for standing in line |
| D．criticize the behavior of queue jumping |