1、AIt is generally believed that we are getting cleaned when we step under a shower. We are, but were also giving a home to lots of tiny little creatures we didnt even know about. A showerhead carries thousands of bacteria called MycobacteriumThese can cause problems like coughs and tiredness, and a g
2、eneral feeling of poorliness (身体不舒服). When you turn on the water, the bacteria go from the showerhead onto and into your body. This is a finding of Norman R. Pace and his team at the University of Colorado, in the US. The scientists investigated bacteria in all kinds of human environment, including
3、showersPaces team looked at 45 showerheads in nine American cities. They discovered that 30 percent of them had large amounts of flying Mycobacterium. But Pace said that they pose few threats to the healthOnly those with a weak immune system might need to worryHe told the New York Times that the bac
4、teria are not as unpleasant as might be thoughtHe said that having a shower is no more dangerous than anything else we do in the morningBut for those who feel sick about the idea of all those microorganisms (微生物), he had some advice. Let the water run for 30 seconds before getting into the shower. W
5、hy? The number of bacteria is smaller than that when the water is just turned on. If that seems like a waste of water, he added that you could also change your showerhead every few months. However, Pace had good news too. He has also been testing the air in US subways. Apart from iron particles (粒子)
6、, which are ground off the track by the wheels of trains, subway air is fresh. The reason is that a trains movement pumps fresh outdoor air into the tunnels. Pace explained that he wanted to understand the natural microbial environments of public places. This kind of knowledge might help discover th
7、e microbes to be used in a bioterrorist (生物恐怖分子) attack.56. From the finding of Norman R. Pace, after taking a shower, we might cough or feel tired because . A. its easy to get a cold when taking a bathB. the showerhead carries many bacteria causing illness C. we dont get cleaned while showeringD. w
8、e dont get a weak immune system57. According to the passage, which of the following is TRUE? A. Hot water could kill most of bacteria in showerheads. B. Of 45 showerheads surveyed in nine cities, 30 carried large amounts of Mycobacterium. C. Changing showerheads is the only way to avoid microorganis
9、ms. D. Shower water contains much less bacteria after being left to run for 30 seconds. 58. We can learn from the third paragraph that . A. having a shower in the morning is more dangerous than at other timeB. the bacteria always threat peoples health C. there is no reason to fear microorganisms for
10、 people with strong immune systemD. it is better to do some exercise in the morning than have a shower59. The underlined word “pose” in the third paragraph probably means “_” A. cause B. avoid C. describe D. promise60. What contributes to fresh air in US subways? A.The trains movement. B. Iron parti
11、cles C. Train wheels. D. Air conditioners on the trainsBThe younger daughter of former New York Mayor Richard White has moved her wedding from New Years Eve to this Thursday so her mother, who has been fighting against cancer for 11 years, can take part in the ceremony, a family spokesman said on We
12、dnesday, Oct, 12, 2013. Elizabeth Lally White, who turns 28 on Thursday, will marry Sam Peterson in Spiaggia, a restaurant on North Michigan Avenue. The reception also will be held at the restaurant, which had been previously scheduled to host the couples engagement party on Thursday.Lally Whites mo
13、ther, Maggie, 68, was reported to have caught breast cancer in 2002. She had an operation in her leg in April and she was hospitalized twice in the weeks following the procedure for treatment of flu-like symptoms that doctors said were not related to the cancer. Maggie, who has used a walker or a wh
14、eelchair during most public appearances in recent years, is well beyond the average survival time for someone with breast cancer.“As the mayor himself has said, she had a pretty difficult summer.” said Jacquelyn Heard, who served Mayor Whites press secretary for years and followed him to the same in
15、ternational law firm that he joined after leaving office in May. “She was not able to get around the way that she normally would do. This year, she has had quite a few setbacks and theyve been pretty well documented. Lally White decided to reschedule the wedding so that her mom can participate in th
16、e festivities (庆祝活动).” Heard said. Lally White is a doctoral candidate at De-Paul University and plans to work with autistic (孤独症) children, and Sam Peterson works in insurance, Heard said.Richard and Maggie White married in 1972 and had three children in addition to Lally Nora, Patrick and Kevin. B
17、ut Kevin was born with a disease and died in 1981 at 33 months.61. When was Elizabeth Lally White born?A. In 1983. B. In 1987. C. In 1985. D. In 1984.62. What can we infer from Paragraph 2?A. Maggie, 68, is recovering now.B. Maggie caught breast cancer in 2002.C. The cancer caused some flu-like symp
18、toms on Maggie.D. Average breast cancer patients lived a life shorter than Maggie.63. Why did Lally White reschedule her wedding?A. She was afraid that her mother couldnt participate her wedding on New Years Eve.B. She was eager to work with autistic children after wedding.C. Her family will move ou
19、t of New York.D. Her mother will accept operation because of her disease.64. How many children did the former mayor and his wife give birth to?A. 3. B. 4. C. 5. D. 6.65. What does the passage mainly talk about?A. The political life of former Mayor. B. The brave wife of former Mayor.C. The wedding of
20、 former Mayors daughter. D. The family life of former Mayor. CAlthough cats may be one of the most popular pets today, little is known about how and when humans and cats set up their close relationship. The earliest evidence for humancat interaction dates back to prehistoric Cyprus（史前塞浦路斯）, where th
21、e remains of a wild cat and a human dated 9,500 years old were found buried together. A new study in the Proceedings of the National Academy of Sciences has confirmed the first direct evidence of a humandomestic cat relationship among Chinese farmers 5,300 years ago. Researchers studied the bones of
22、 cats, dogs, deer and other animals unearthed in an excavation (挖掘) near a village in Central China. By using some ways, scientists showed that the cats were living on a mostly millet(黍)based diet, just like the domesticated dogs and pigs from the site. The most reasonable explanation for a high con
23、sumption of milletbased food is that the cats had formed a stable and mutual relationship with humans and could easily feed on rodents (啮齿动物) around human villages, find leftover food or even have been fed by people intentionally, said Hu Yaowu from the Chinese Academy of Sciences in Beijing, whose
24、research focuses on the relationship between humans and domesticated animals.It is very interesting for us to find the consumption of millet-based foods by the cats, since this kind of evidence had long been missing.” Hu explains. Since cats usually eat meat, such a diet would be unexpected, unless
25、the cats were being fed by people, the study argues. The researchers also found that one of the cats survived to reach old age, implying that it had a safe place to live and enough to eat. Why the farmers wanted to keep cats nearby or make them pets could be answered by other evidence. Chinese archa
26、eologists found some storage containers were specifically designed to keep out rodents a vermin (害兽) that cats could certainly have helped with. The simplified theory is that rats were attracted to the food of farmers, and so were harmful to farmers. Cats were attracted to the rats, and so farmers f
27、ormed a mutually beneficial relationship with cats, taking care of them in return for pest control.66. The evidence found in the remains dating back to prehistoric Cyprus means . A. human made cats pets as early as 9,500 years agoB. human interacted with cats very earlyC. cats didnt appear until pre
28、historic Cyprus D. when cats became domesticated 67. Apart from cats, Hu Yaowu and his teams may also study .A. the preventions of pests from grains B. the history of Chinese farmingC. the dogs and pigs D. the ways to keep pets68. Which of the following is NOT the evidence of Chinese farms keeping c
29、ats? A. Cats didnt feed on meat. B. The cats consumed large amounts of milletbased foods. C. One of the cats survived to reach old age. D. Some storage containers were specifically designed to keep out rodents.69. What are the reasons for farmers to keep cats? A. Helping keep other domesticated anim
30、als. B. Not letting cats eat food.C. Supplying meat for human. D. Helping reduce the amount of pests. 70. In which part of a newspaper would be the passage most probably appear .A. Entertainment B. EnvironmentC. Human and Science D. Life and fashion题 号565758596061626364656667686970答 案BDCAACDABDBCADC