Ulcers Even though ulcers appear to run in families, lifestyle plays more of a role than genetic factors in causing the illness, according to a report in the April 13th Journal of Internal Medicine. In particular, smoking and stress in men and the regular use of pain releasing medicines in women were linked with an increased risk of developing all ulcers. Overall, 61% of ulcer risk appears to be due to environmental factors, such as smoking, and the remaining 39% is due to genes according to Dr. Ismo Raiha Of the University of Turky and colleagues at the University of Helsinki, Finland. Some researchers had suggested that families may spread Helicobacteria pylori, the bacteria that can cause ulcers. However, the new study suggests this is unlikely, according to the report. Raiha and colleagues studied data from more than 13,000 pairs of twins "to examine the roles of genetic and environmental factors in the origin of peptic ulcer disease", they explain. Both twins were more likely to develop an ulcer if the pair were genetically the same as compared with a pair of fraternal twins, suggesting that there must be some genetic susceptibility to ulcer development. However, the risk was no greater in twins living together compared with twins living apart, suggesting that shared exposure to H. pylori (幽门螺旋菌) was not to blame. "Environmental effects were not due to factors shared by family members, and they were related to smoking and stress in men and the use of analgesics in women," the authors wrote. "The minor effects of shared environment to disease liability do not support the concept that the grouping of risk factors, such as H. pylori infection, would explain the genetic factor of peptic ulcer disease, "they concluded. "Environmental effects" in the fifth paragraph refers to effects brought about by ______.
A. a clean environment
B. smoking and stress in men and use of pain-killing medicine in women
C. factors shared by family members such as genes and the food they eat
D. shared exposure to H. pylori infection
查看答案
Many Benefits from Cancer Organization 1. Do you know a child who survived leukemia Do you have a mother, sister or aunt whose breast cancer was found early thanks to a mammogram Do you have a friend or coworker who quit smoking to reduce their risk of lung cancer Each of these individuals benefited from the American Cancer Society’s research program. 2. Each day scientists supported by the American Cancer Society work to find breakthroughs that will take U.S. one step closer to a cure. The American Cancer Society has long recognized that research holds the ultimate answers to the prevention, diagnosis and treatment of cancer. 3. As the largest source of nonprofit cancer research funds in the United States, the American Cancer Society devotes over $100 million each year to research. Since 1946, they’ve invested more than $2.4 billion in research. The investment has paid rich dividends. In 1946, only one in four cancer patients was alive five years after diagnosis; today 60 percent live longer than five years. 4. Investigators and health professionals in universities, research institutes and hospitals throughout the country receive grants from the American Cancer Society. Of the more than 1,300 new applications received each year, only 11 percent can be funded. If the American Cancer Society had more money available for research funding, could nearly 200 more applications considered outstanding be funded each year 5. You can help fund more of these applications by participating in the American Cancer Society Relay for Life, a team event to fight cancer. More funding means more cancer breakthroughs and more lives being saved. To learn more, call Donna Hood, chair with the Neosho Relay for Life of the American Cancer Society at 451-4880. A. What Could Be Done with More Money B. Establishment of the American Cancer Society C. Significance of Funded Research D. Other Sources of Funding for Cancer Research E. Benefits Achieved Through Investment F. How You Can Offer Help Paragraph 2 ______
A Miracle Cancer Cure Unless you have gone through the experience yourself, or watched a loved one’s struggle, you really have no idea just how desperate cancer can make you. You pray, you rage, you bargain with God, but most of all you clutch at any hope, no matter how remote, of a second chance at life. For a few excited days last week, however, it seemed as if the whole world was a cancer patient and that all humankind had been granted a reprieve. Triggered by a front-page medical news story in the usually reserved The New York Times, all anybody was talking about on the radio, on television, on the Internet, in phone calls to friends and relatives—was the report that a combination of two new drugs could, as The New York Times put it, cure cancer in two years. In a matter of hours patients had jammed their doctors’ phone lines begging for a chance to test the miracle cancer cure. Cancer scientists raced to the phones and fax lines to make sure everyone knew about their research too, generating a new round of headlines. The time certainly seemed ripe for a breakthrough in cancer. Only last month scientists at the National Cancer Institute announced that they were halting a clinical trial of a drug called tamoxifen—and offering it to patients getting the placebo—because it had proved so effective at preventing breast cancer (although it also seemed to increase the risk of uterine cancer). Two weeks later came The New York Times’ report that two new drugs can shrink tumors of every variety without any side effects whatsoever. It all seemed too good to be true, and of course it was. There are no miracle cancer drugs, at least not yet. At this stage all the drug manufacturer can offer is some very interesting molecules, and the only cancers they have cures so far have been in mice. By the middle of last week, even the most breathless TV talk-show hosts had learned what every scientist already knew: that curing a disease in lab animals is not the same as doing it in humans. "The history of cancer research has been a history of curing cancers in the mouse," Dr. Richard Klausner, head of the National Cancer Institute, told the Los Angles Times. "We have cured mice of cancer for decades—and it simply didn’t work in people." What is the meaning of the statement "It all seemed too good to be true, and of course it was."
A. The news seemed very good and real and it was good.
B. The news seemed very good, but not so real, and it was false.
C. The news seemed not good, but real, and it was not good.
D. The news seemed not good, but real, and it was not good.
Many Benefits from Cancer Organization 1. Do you know a child who survived leukemia Do you have a mother, sister or aunt whose breast cancer was found early thanks to a mammogram Do you have a friend or coworker who quit smoking to reduce their risk of lung cancer Each of these individuals benefited from the American Cancer Society’s research program. 2. Each day scientists supported by the American Cancer Society work to find breakthroughs that will take U.S. one step closer to a cure. The American Cancer Society has long recognized that research holds the ultimate answers to the prevention, diagnosis and treatment of cancer. 3. As the largest source of nonprofit cancer research funds in the United States, the American Cancer Society devotes over $100 million each year to research. Since 1946, they’ve invested more than $2.4 billion in research. The investment has paid rich dividends. In 1946, only one in four cancer patients was alive five years after diagnosis; today 60 percent live longer than five years. 4. Investigators and health professionals in universities, research institutes and hospitals throughout the country receive grants from the American Cancer Society. Of the more than 1,300 new applications received each year, only 11 percent can be funded. If the American Cancer Society had more money available for research funding, could nearly 200 more applications considered outstanding be funded each year 5. You can help fund more of these applications by participating in the American Cancer Society Relay for Life, a team event to fight cancer. More funding means more cancer breakthroughs and more lives being saved. To learn more, call Donna Hood, chair with the Neosho Relay for Life of the American Cancer Society at 451-4880. A. What Could Be Done with More Money B. Establishment of the American Cancer Society C. Significance of Funded Research D. Other Sources of Funding for Cancer Research E. Benefits Achieved Through Investment F. How You Can Offer Help Paragraph 4 ______
Many Benefits from Cancer Organization 1. Do you know a child who survived leukemia Do you have a mother, sister or aunt whose breast cancer was found early thanks to a mammogram Do you have a friend or coworker who quit smoking to reduce their risk of lung cancer Each of these individuals benefited from the American Cancer Society’s research program. 2. Each day scientists supported by the American Cancer Society work to find breakthroughs that will take U.S. one step closer to a cure. The American Cancer Society has long recognized that research holds the ultimate answers to the prevention, diagnosis and treatment of cancer. 3. As the largest source of nonprofit cancer research funds in the United States, the American Cancer Society devotes over $100 million each year to research. Since 1946, they’ve invested more than $2.4 billion in research. The investment has paid rich dividends. In 1946, only one in four cancer patients was alive five years after diagnosis; today 60 percent live longer than five years. 4. Investigators and health professionals in universities, research institutes and hospitals throughout the country receive grants from the American Cancer Society. Of the more than 1,300 new applications received each year, only 11 percent can be funded. If the American Cancer Society had more money available for research funding, could nearly 200 more applications considered outstanding be funded each year 5. You can help fund more of these applications by participating in the American Cancer Society Relay for Life, a team event to fight cancer. More funding means more cancer breakthroughs and more lives being saved. To learn more, call Donna Hood, chair with the Neosho Relay for Life of the American Cancer Society at 451-4880. A. What Could Be Done with More Money B. Establishment of the American Cancer Society C. Significance of Funded Research D. Other Sources of Funding for Cancer Research E. Benefits Achieved Through Investment F. How You Can Offer Help Paragraph 3 ______