题目
题型：不详难度：来源：
A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin caner, actually increases the risk.Researchers from the University of Yale based their findings on a review of 18 earlier studies that looked at the association between sunscreen use and melanomas (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.小题1:The underlined word “flaws” in the 2nd paragraph most probably means .
| A．evidences | B．facts | C．faults | D．failures |
| 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 |
| A．sunscreen users get skin cancer more often | B．the volunteers have prov ed 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 |
| A．Sunscreen to Prevent Skin Cancer | ||
| B．Sunscreen to Increase Skin Cancer | C．Skin Cancer Caused by Sunscreen | D．Skin Cancer Caused by Freckles |
答案
小题1:C
小题1:B
小题1:D
小题1:A
解析
核心考点
试题【A new study has found no evidence that sunscreen, commonly used to reduce the ri】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
Liu and coach Sun Haiping were followed away by officials after arriving at Shanghai Pudong airport at around 6 : 30 p. m. , and said nothing to the waiting media.
Liu went straight to the Xinzhuang training base in Shanghai, where he will start on the comeback (恢复) through rehabilitation (复职) and training.
Feng Shuyong, vice-director of China"s Athletics Administrative Center, said a group of experts is on standby at the training base to help with Liu"s recovery.
"The experts will give Liu a full check-up tomorrow or the day after and advise regularly on rehabilitation in the coming months," Feng was quoted by qq. com as saying.
The foot injury forced defending champion Liu to quit from the 2008 Beijing Olympics last August after "he limped out of the Bird"s Nest in the first round of the men"s 110m hurdles, bitterly disappoint
ing adoring home fans.The 25-year-old Athens Olympic and world champion had successful foot surgery in December at the Memorial Hermann-Texas Medical Center in Houston, and had four calcium deposits (钙物质) removed from his right Achilles tendon (跟腱).
He spent the next three months in Houston for rehabilitation and basic training under the guidance of doctors there.
"His recovery is better than we expected. Doctors believe that after three months" rehabilitation and training, he has actually achieved the level of recovery that generally needs four months," Feng said.
Liu will, however, be absent from the ongoing annual Chinese People"s Political Consultative Conference (CPPCC) meeting due to the recovery process. Feng said Liu is paying close attention to the meeting through the Internet, and closely following issues such as athletes" education and life after retirement.
It is the second time Liu has asked for leave from the annual session after being elected to the CPPCC: He did not attend last y
ear"s meeting because he was at a key competition in Spain.小题1:The best title for the passage is _______.
| A．Fate and Challenge | B．Liu Xiang Returns after Operation Success |
| C．No Desire to Be a Representative of CPPCC | |
| D．Happiness and Hardships behind Success |
| A．The experts will give Liu a full check-up and advise regularly on recovery in the coming months. |
| B．Liu and his coach were followed away by officials after arriving at Pudong airport at around 6:30. |
| C．Liu paid close attention to the meeting through the Internet, caring graduate"s further education. |
| D．His foot operation was successful and four calcium deposits were removed from his right Achilles tendon. |
| A．walked nervously | B．walked quickly | C．walked bitterly | D．walked lamely |
| A．recovery process | B．accepting the training | C．lecture abroad | D．a key competition |
Researchers studied the effects of tranexamic acid （凝血酸）, or TXA, in more than 10,000 injured people in 40 countries who received the drug within 8 hours of being injured. The study was published in the medical journal Lancet. Doctors found that patients who got TXA had a 15percent lower chance of dying from hemorrhage than those who didn’t get it . They also had a 10 percent lower chance of dying from any other cause, including organ failure and a head injury. The study was paid for by the British government.
The drug is commonly used in wealthy countries during elective surgeries(外科手术) to stop bleeding , but isn’t used for accident victims. TXA is off-patent and made by many companies. It costs about $4.5 per gram, and a typical dose is two grams. It is usually given via an injection（注射） and would be relatively easy to introduce, even in poor countries, experts said.
Previous tests of the drug regarded its use in elective surgeries, such as heart operations, but this was the first study to test the drug on accident victims. Doctors were worried it might increase side effects such as blood clots （凝块）in the heart and lungs, strokes, or heart attacks. There was no evidence of that in the Lancet study, though the authors said it was possible they might have missed some of these incidents.
For people between 5 and 45, accidents are the second leading cause of death worldwide after AIDS, and about 600,000 injured patients bleed to death every year. Experts estimated that if TXA were readily available, between 70,000 and 100,000 lives a year could be saved. Though the drug wasn’t tested on children , experts said it would almost certainly work with them as well.
小题1:The underlined word” hemorrhage” in Paragraph 2 probably means ________
| A．serious illness | B．heart disease | C．heavy bleeding | D．lack of drug |
| A．It can only be made in England | B．It was only used in operations before |
| C．It is a patented drug | D．It is mainly used in poor countries |
| A．a lot of patients died unexpectedly after using it |
| B．it has no treatment effect on patients |
| C．it can cause blood clots or stroke |
| D．they hadn’t used it on accident victims before |
| A．It is a pity that TXA wasn’t widely used on injured patients before |
| B．Tests have proved that TXA can be used on children |
| C．People between 5 and 45 should be injected with TXA every year |
| D．Accidents are the first leading cause of death worldwide. |
Take time to chew your food： Chew your food slowly， savoring every bite. We tend to rush through our meals， forgetting to actually taste the flavors and feel the textures(质地) of 小题3: is in our mouths. Reconnect with小题4: joy of eating.
Avoid stress while eating： Avoid eating while working， driving， arguing， or watching TV. Try taking some deep breaths before beginning your meal， or light candles and play soothing music to create a relaxing atmosphere.
Listen to your body： Ask 小题5: if you are really hungry. You may really be thirsty， so try drinking a glass of water first. During a meal， stop eating before you feel full. It actually takes a few minutes 小题6: your brain to tell your body that it has had 小题7: food， so eat slowly.
Eat early： Starting your day小题8: a healthy breakfast can jumpstart your metabolism(新陈代谢)， and eating early in the day gives your body time to work those calories off.
My aim this year is to persuade as many of my friends and colleagues as possible to choose the train, and leave their cars behind too. My gardens have been pesticide(***虫剂)–free zones for years and I enjoy seeing more wildlife on my doorstep as a result; I’ve tried to reduce my contribution to water pollution too, by using environment-friendly, phosphate(磷)–free washing powder , and by no longer thinking of the toilet as a suitable waste-disposal(处理) point .
I ran after a young lady through town recently to give her back the piece of paper she had carelessly thrown away. She disappeared into a shop, and when I followed her inside and made my presentation, she was doubly embarrassed--she worked there, and the boss gave her a ticking–off too. I’ve started asking fellow drivers at gas stations why they aren’t using unleaded (无铅的) petrol . These are small things, but we have to start somewhere, and every little does help .
小题1:To help the environment, the author is trying to do everything mentioned below EXCEPT .
| A．taking the train instead of a car |
| B．throwing away the old cars |
| C．avoiding the use of pesticides |
| D．running after those who throw articles carelessly |
| A．to find out where she worked |
| B．to give her back the piece of paper she had lost |
| C．to tell her not to throw away pieces of paper carelessly |
| D．to ask her to pay him for picking up the piece of paper. |
| A．blaming | B．a piece of paper | C．prize | D．ticket |
| A．persuade his friends to take the train |
| B．inform us of the good news |
| C．make clear who is responsible for the environment |
| D．try to advise us all to protect our environment |
The children’s passion and talent inspired Hefley to work with the kids at an orphanage（孤儿院）in Kampala, the capital city of Uganda, to organize a traveling dance troupe（团）．The goals: to give the problems in Uganda a human face, to raise awareness and to raise money．
The first tour touched down at six American cities in 1994．Today, the 22-member troupe, known as the Spirit of Uganda, travels across America every two years．The young performers bring their energy and joy to audiences across the U．S．and help support hundreds of Ugandan orphans back home．Among the young dancers, some earn scholarships to attend the U．S．colleges, and then return to their country to help rebuild it．
Photojournalist Douglas Menuez first photographed the troupe in 2006 -?a project that led to his new book, Transcendent Spirit, from which these images are drawn．At each performance, the dancers’ faces show pure joy, quite an achievement given the hardships they’ve faced．"They look to the future, not the past," explains Menuez．"They embrace beauty and good in the world．" As one dancer puts it, "People think we have lost our parents．We’ve had so many problems．But then they see us perform．They see our smiles．And they learn that life goes on．"
小题1:What are the first two paragraphs mainly about?
| A．How miserable Ugandan orphans’ life is． |
| B．How the dance troupe was set up． |
| C．How the young dancers earned money． |
| D．How the orphans lost their parents．| |
| A．It was started by a journalist． |
| B．It travels across the U．S．annually． |
| C．It consists of two dozen performers． |
| D．Its dancers have chances to study in the U．S． |
| A．beautiful | B．talented | C．optimistic | D．humorous |
| A．Ugandan orphans turn tragedy into dance |
| B．Transcendent Spirit: A close look at Uganda |
| C．AIDS and war are claiming people’s lives |
| D．Lots of people are helping Ugandan orphans |
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