题目内容
D
At age 61, identical twins Jeanne and Susan no longer look exactly alike. Susan smoked for many years and is an admitted sun worshipper, whose habits Jeanne does not share. A new study of twins suggests you can blame those coarse(粗糙的)wrinkles, brown or pink spots on too much time in the sun, smoking, and being overweight.
Because twins share genes, but may have different exposures to environmental factors studying twins allows an “opportunity to control for genetic susceptibility(易受影响性),” Dr. Elma D. Baron, at Case Western Reserve School of Medicine in Cleveland, Ohio, and his colleagues explain in the latest issue of Archives of Dermatology.
Their analysis of environmental skin-damaging factors in 65 pairs of twins hints that skin aging is related more to environment and lifestyle than genetic factors.
But when it comes to skin cancer, the researchers say their findings support previous reports that both environment and genes affect skin cancer risk.
Baron’s team examined facial skin of 130 twins, 18 to 77 years old, who lived mostly in the northem Midwest and Eastern regions of the US, who were attending the Twins Days Festival in Ohio in August 2002. At this time, each of the twins also separately reported how their skin burned or tanned(晒黑)without sunscreen, their weight, and their history of skin cancer, smoking, and alcohol drinking. The study group consisted of 52 fraternal(异卵双生)and 10 identical twin pairs, plus 3 pairs who were unsure of their twin status.
From these data, the researchers noted strong ties, outside of twin status, between smoking, older age, and being overweight, and having facial skin with evidence of environmental damage. By contrast, sunscreen use and drinking alcohol appeared related to less skin damage.
Baron and his colleagues say the current findings, which highlight ties between facial aging and potentially avoidable environmental factors—such as smoking, being overweight, and unprotected overexposure to the sun’s damaging rays—may help motivate people to minimize these risky behaviors.
67．Which of the following is true according to the passage?
A．Jeanne and Susan share all the habits including smoking.
B．Skin aging is related more to environment and lifestyle than genetic factors.
C．Only identical twins can take part in the research.
D．Sunscreen use cannot help people have less skin damage.
68．Why did Baron’s team do the research on twins?
A．Twins are more likely to suffer from skin cancer.
B．It may guarantee the research is not influenced by genetic factors.
C．It gives others an opportunity to control twins’ genes.
D．It helps find twins are exposed to different environments.
69．What can you infer from the last paragraph?
A．This research makes people aware of dangerous lifestyles.
B．The environmental factors are unavoidable.
C．Being exposed to the sun is absolutely damaging.
D．There is little relationship between skin aging and environment.
70．The passage is mainly concerned with___________
A．skin cancer and environment
B．identical twins research
C．aging skin and environmental factors
D．genes and lifestyles
67-70 BBAC
解析
名校课堂系列答案Success is often measured by the ability to overcome adversity. But, it is often the belief of others that gives us the courage to try.
J. K. Rowling, author of the Harry Potter book series, began writing at age 6. In her biography, she remembers with great fondness when her good friend, Sean, whom she met in secondary school, became the first person to encourage her and help build the confidence that one day she would be a very good writer.
“He was the first person with whom I really discussed my serious ambition to be a writer. He was also the only person who thought I was bound to be a success at it, which meant much more to me than I ever told him at the time.”
Despite many setbacks Rowling persevered in her writing, particularly fantasy stories. But it wasn't until l990 that she first conceived the idea about Harry Potter. As she recalls, it was on a long train journey from London to Manchester that “the idea of Harry Potter simply fell into my head. To my immense frustration(沮丧), I didn't have a functioning pen with me, and I was too shy to ask anybody if I could borrow one. I think, now, that this was probably a good thing, because I simply sat and thought, for four(delayed train) hours, and all the details bubbled up in my brain, and this scrawny, black-haired, bespectacled boy who didn't know he was a wizard became more and more real to me.”
That same year, her mother passed away after a ten-year battle with multiple sclerosis, which deeply affected her writing. She went on to marry and had a daughter, but separated from her husband shortly afterwards.
During this time, Rowling was diagnosed with clinical depression. Unemployed, she completed her first novel in area cafes, where she could get her daughter to fall asleep. After being rejected by l2 publishing houses, the first Harry Potter novel was sold to a small British publishing house.
Now with seven books that have sold nearly 400 million copies in 64 languages, J. K. Rowling is the highest earning novelist in history. And it all began with her commitment to writing that was fostered by the confidence of a friend !
【小题1】Who believed J. K. Rowling was to be a good writer?
| A．Her friend Sean. | B．Her mother. | C．Her daughter. | D．Her husband. |
| A．at the age of 6 | B．on a train journey |
| C．after her mother's death | D．in her secondary school |
| A．her train was delayed for four hours |
| B．she didn't have a pen with her |
| C．her mind suddenly went blank |
| D．no one would offer her help |
| A．open-minded | B．warm-hearted | C．good-natured | D．strong-willed |
| A．hardship makes a good novelist |
| B．the courage to try is a special ability |
| C．you can have a wonderful idea everywhere |
| D．encouragement contributes to one's success |
Success is often measured by the ability to overcome adversity（逆境）. But it is often the belief of others that gives us the courage（勇气）to try.
J. K. Rowling, author of the Harry Potter book series, began writing at age 6. Her good friend-Sean became the first person to encourage her and help her build the confidence that one day she would be a very good writer.
“He was the first person with whom I really discussed my serious ambition（志向） to be a writer. He was also the only person who thought I was bound to（注定）be a success at it, which meant much more to me than I ever told him at the time.”
Though there were many difficulties, Rowling continued her writing, particularly fantasy stories. But it wasn't until l990 that she first came up with the idea about Harry Potter. As she recalls（回忆）, it was on a long train journey from London to Manchester that “the idea of Harry Potter simply fell into my head. To my great disappointment, I didn't have a pen with me, and I was too shy to ask anybody if I could borrow one. I think, now, that this was probably a good thing, because I simply sat and thought, for four (delayed train) hours, and all the details came up in my brain, and this thin, black-haired, bespectacled（戴眼镜的）boy who didn't know he was a wizard became more and more real to me.”
That same year, her mother died after a ten-year fight with serious diseases, which deeply affected her writing. She went on to marry and had a daughter, but separated from her husband shortly afterwards.
During this time, Rowling was diagnosed with depression（诊断患有抑郁症）. Unemployed, she finished her first novel in area cafes, where she could get her daughter to fall asleep. After being refused by l2 publishing houses, the first Harry Potter novel was sold to a small British publishing house.
Now with seven books that have sold nearly 400 million copies in 64 languages, J. K. Rowling is the highest earning novelist in history. And it all began with her friend’s encouragement as well as her ambition to write.
【小题1】 Who believed J. K. Rowling was to be a good writer?
| A．Her friend Sean. | B．Her mother. |
| C．Her daughter. | D．Her husband. |
| A．at the age of 6 |
| B．on a train journey |
| C．after her mother's death |
| D．in her secondary school |
| A．her train was delayed for four hours |
| B．she didn't have a pen with her |
| C．her mind suddenly went blank |
| D．no one would offer her help |
| A．open-minded | B．warm-hearted |
| C．good-natured | D．strong-willed |
| A．adversity makes a good novelist |
| B．the courage to try is a special ability |
| C．you can have a wonderful idea everywhere |
| D．encouragement helps one succeed |