题目内容
A recent study conducted by the Pine Street Foundation showed that a dog’s nose may have the ability to detect cancer. A dog’s nose, which was the “medical device” used as part of the research, is believed to be among the world’s most powerful olfactory(嗅觉的) sensors. The study was conducted with 169 subjects 55 of which had been diagnosed as having lung cancer, 31 have breast cancer and 83 control subjects——people without cancer. During the study, five professionally trained scent dogs were used to distinguish between the breath samples of cancer patients and those who were healthy. With an average of 90% accuracy, the research was deemed a success.
The Pine Street Foundation conducted its research on the belief that cancer cells give off a different type of metabolic(新陈代谢) waste product than normal cells. According to the study, the difference is so great that it can be detected by a dog’s sense of smell, including both early and late stages of the disease.
In the conclusion of the study the Pine Street Foundation said that even ordinary dogs may be trained to identify the presence of cancer with only a breath sample. The organization also said that dogs can recognize the disease with astonishing amount accuracy and, finally, that the dog’s detection was not hindered(妨碍) by the presence of age, smoking or stage of cancer.
The Pine Street Foundation plans to continue their research and is currently seeking funding to launch new studies.
If we want to add several different detecting examples to the passage, we should write them
__________.
A.between paragraph 1 and paragraph 2 B.between paragraph 2 and paragraph 3
C.between paragraph 3 and paragraph 4 D.before paragraph 1 or after paragraph 4
The best title for this passage might be ______.
A.Dogs may smell cancer B.Why dogs can smell cancer
C.A Study on dogs’ special ability D.A study on breast cancer
Dogs can smell cancer because ____________.
A.they can detect faster than man B.their sense of smell is very sensitive
C.dogs metabolize the food slowly D.patients give off bad smell
People can know from the passage _________.
A.all dogs can be used to smell cancer
B.it’s not easy to find out cancer in the early stage
C.most of the research experiments are successful
D.dogs detect cancer by breathing and feeling
【小题1】B
【小题2】A
【小题3】B
【小题4】C
解析:
【小题1】文章结构题。由全文内容叙述顺序知。
【小题2】主旨大意题。由全文内容知。
【小题3】细节理解题。由第一段第二句知。
【小题4】推断题。由90% accuracy知。
A recent Living Social survey showed that Americans may live up to their poor reputation while travelling abroad. But what’s more surprising is that many of those surveyed self-identified themselves as ‘ugly’ Americans and the world’s worst travelers.
Those in the U.S. ranked themselves as the worst travellers by a shocking 20 per cent, followed by 15 per cent saying the Chinese were the most substandard tourists.
Americans topped the list as being the worst-behaved travelers in a survey of 5,600 respondents, 4,000 of whom were Americans. Other respondents were in Australia, Canada, Ireland and the United Kingdom. But even American respondents considered their compatriots(同胞) as the worst travelers from a list of 16 nationalities.
Canadians and Australians also put Americans in the No. 1 spot. Irish respondents pointed to U.K. residents and U.K. respondents gave Germans the nod. On the other hand, 37% of Americans opted for "none of the above" in answer to the worst-tourists question, displaying more tolerance and open-mindedness than the other nationalities.
Other survey questions had respondents admitting pilfering from hotels. Four in ten U.S. survey-takers said they’d stolen something – mostly towels (28%) and bathrobes (8%). Other popular pinched items included pillows, remote controls, Bibles and sheets.
Not surprising is that Americans have less time off from work than other nationalities. Americans reported getting 16 days off, compared with 28 days for the Irish, 27 days for Australians, 23 days for U.K. workers; and 21 days for Canadians.
In the travel mishaps department, the most common travel disaster reported by Americans was lost luggage on an airline (21%); bad weather (21%); and getting very lost (16%).
As for places Americans most want to see, Disney World and Las Vegas made the top 10, but they weren't at the top of the heap. And New York didn't make the cut.
1.What percentage of American respondents is in the survey?
A.20 % |
B.15% |
C.71% |
D.37% |
2.The underlined word “pilfering” in Para. 5 most probably means ________.
A.taking |
B.bringing |
C.stealing |
D.borrowing. |
3.According to the survey, what kind of things are most taken away by Americans?
A.towels and pillows |
B.bathrobes and remote controls. |
C.towels and Bibles |
D.bathrobes and towels. |
4.What’s the best title of this passage?
A.Chinese were announced as the world’s worst travellers. |
B.The global worst travellers were announced. |
C.Disney World is the best destination to Americans. |
D.European travellers were the best in the world |