| A daily dose of aspirin can
prevent cancer in people with a genetic disorder that increases their risk of
developing the disease, scientists said on Monday. The finding could also have important implications for the wider population, although more research is needed and unraveling the connection will take some time since the benefits of aspirin were only seen after several years. John Burn of the Institute of Human Genetics at Newcastle University in Britain said his study might also have uncovered a simple way of controlling stems cells that make tumors grow. "We believe that aspirin may have an effect on the survival of aberrant (异常的) stem cells in the colon," Burn said, presenting his findings at the ECCO-ESMO European cancer congress in Berlin. Burn and colleagues tested 1,071 people with Lynch syndrome (林奇综合症) — an inherit A. Aspirin may offer a simple way to control stems cells that make tumors grow. B. Aspirin may influence the survival of aberrant stem cells in the colon. C. Aspirin may damage faulty stem cells before their mutation. D. Aspirin may reduce the risk of developing colon cancer by blocking the COX-2. [单项选择]Many forms of cancer can be cured if detected early
（） A. selected B. operated C. developed D. discovered [单项选择]Asbestos is a mineral fiber that can cause cancer if inhaled.
A. picked up B. taken indoors C. breathed in D. eaten up [单项选择]（）the prices of daily goods going up, people can't afford to buy expensive things.
A. With B. By C. On D. Since [单项选择]来源:考试大-职称英语考试第二篇Study Says Dogs Can Smell Cancer
Dogs are known for their sense of smell.They can find missing people and things like bombs and illegal drugs.Now a study suggests that the animal known as man’s best friend can even find bladder(膀胱)cancer.
Cancer cells are thought to produce chemicals with unusual odors(气味).Researchers think dogs have the ability to smell these odors,even in very small amounts,in urine(尿).The sense of smell in dogs is thousands of times better than in humans.
The study follows reports of cases where,for example,a dog showed great interest in a growth on the let of its owner.The mole(痣)was later found to be skin cancer.
Carolyn Willis led a team of researchers at Amersham Hospital in England.They trained different kinds of dogs for the experiment.The study involved urine collected from bladder cancer patients,from people with other diseases and from healthy people.
Each dog was tested eight times.In each test there were seven samples f
A. private home. B. training school. C. hospital. D. police station. [单项选择] Influenced by movies and popular novels, most people see sharks as people-eating monsters. This is far from the truth. Every year, a few types of sharks injure about 100 people worldwide and kill about 25. Most attacks are by great white sharks, which often feed on sea lions and other marine mammals (海洋哺乳动物). They sometimes mistake human swimmers for their normal prey, especially if they are wearing black wet suits.
If you are a typical ocean-goer, your chances of being killed by an unprovoked attack by a shark are about 1 in 100 million. You are more likely to be killed by a pig than a shark and thou sands of times more likely to get killed when you drive a car. Sharks help save human lives. In addition to providing people with food, they are helping us learn how to fight cancer, bacteria (细菌), and viruses. Sharks are very healthy and have aging processes similar to ours. Their highly effective immune system allows wounds to heal quickly without becoming infected, and their blo
A. they are delicious food for us B. they are companions of human beings C. they can help rescue human beings D. they can help improve human health 我来回答: 提交
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