下面文章中有5处(第61~65题)需要添加小标题。请从以下选项(A、B、C、D、E和F)中选出符合各段意思的小标题。选项中有一项是多余选项。

A. Attention must be paid to environmental factors.

B. Principles of curing cancers.

C. It will take long to find perfect cures.

D. An important discovery in the research.

E. The causative factor of cancer is very clear.

F. The survival rate differs among patients with various cancers.

61. ____________

“I have great confidence that by the end of the decade we’ll know in vast detail how cancer cells arise,” says microbiologist Robert Weinberg, an expert on cancer. “But,” he cautions, “some people have the idea that once one understands the causes, the cure will rapidly follow. Consider Pasteur. He discovered the causes of many kinds of infections, but it was fifty or sixty years before cures were available. ”

62. ____________

This year, 50 percent of the 910,000 people who suffer from cancer will survive at least five years. In the year 2020, the National Cancer Institute estimates, that figure will be 75 percent. For some skin cancers, the five-year survival rate is as high as 90 percent. But other survival statistics are still discouraging—13 percent for lung cancer, and 2 percent for cancer of the pancreas (胰腺) .

63. ____________

With as many as 120 varieties in existence, discovering how cancer works is not easy. The researchers made great progress in the early 1970s, when they discovered that oncogenes, which are cancer-causing genes, are inactive in normal cells. Anything from universe rays to radiation to diet may activate an inactive gene, but how remains unknown. If several oncogenes are driven into action, the cell, unable to turn them off, becomes cancerous.

64. ____________

The exact process involved is still mysterious, but the likelihood that many cancers are initiated at the level of genes suggests that we will never prevent all cancers. “Changes are a normal part of the evolutionary process,” says oncologist William Hayward. Environmental factors can never be totally eliminated; as Hayward points out, “We can’t prepare a medicine against universe rays.”

65. ____________

The prospects for cure, though still distant, are brighter. “First, we need to understand how the normal cell controls itself. Second, we have to determine whether there are a limited number of genes in cells, which are always responsible for at least part of the trouble. If we can understand how cancer works, we can reduce its action. ”

When I was young, I went looking for gold in California. I never found enough to make a rich strike. But I did discover a beautiful part of the country called Stanislau. Like Heaven on Earth, it had bright green hills and deep forests where soft winds touched the trees. By the time I arrived, the charming paradise had been deserted because miners’ good luck didn’t last.

Then, I realized I was not alone after all.

A man was smiling at me as he stood in front of his little house. Its front yard was full of blue and yellow flowers. White curtains hung from the windows and floated in the soft summer wind.

Still smiling, the man invited me inside. My spirit seemed to come to life again. I saw a bright rug on the shining wooden floor. And on little tables there were seashells, books and china vases full of flowers. A woman had made this house into a home. The delight in my heart showed on my face. The man read my thoughts. “All her work.” He said affectionately, “Nothing here hasn’t felt the touch of her hand.”

One picture on the wall was not hanging straight. He went to fix it. He stepped back several times to make sure the picture was straight. Then he gave it a gentle touch. “She always does that,” he explained, “It is like the finishing pat a mother gives her child’s hair after she has brushed it. I don’t know why I do it. I just do it.”

As he talked, I went to a little black-walnut shelf that held a small picture of the most beautiful creature I had ever seen. There was a sweetness and softness in the woman’s expression. The man stared at the picture. “Nineteen her last birthday. That was the day we married. When you see her...ah, just wait until you meet her!” “Where is she now?” I asked. “Oh, she is away visiting her parents. This is Wednesday,” he said slowly. “She will be back on Saturday, in the evening.”

That night, I stayed. The man told me his name was Henry.

Thursday evening we had two visitors, Tom and Joe. “We just drop over to ask when little madam is coming home. Any news from her?” “Oh yes,” the man replied. “A letter.” He took a yellowed letter out of his wallet and read it. It was full of loving messages. While reading, he glimpsed his friends and cried out, “Oh no, you are doing it again, Tom! Take your hands away and let me see your eyes. I’m going to tell her this time!” “No, you mustn’t do that, Henry,” the grey-haired miner said. “I am getting old. And any little sorrow makes me cry. Lord, we miss her so.”

Saturday finally came.

I was glad to see his two friends, Tom and Joe, with guitars, coming down the road as the sun began to set. They put the flowers they brought in vases and began to play some fast and lively songs.

Henry’s friends kept giving him glasses of whiskey. When I reached for one of the two remaining glasses, Tom stopped my arm. “Drop that! Take the other.” he whispered. I did so. Henry was served last. He had hardly swallowed his drink when the clock struck midnight. His face grew pale and paler. “Boys,” he said, “I am sick with fear. Help! I want to lie down.” Henry was asleep almost before the words were out of his mouth.

In a moment, those handy men had his clothes off and tucked him into his bed. They seemed to be getting ready to leave. So I said, “Please don’t go, gentlemen. She won’t know me. I am a stranger.” They glanced at each other. Then Joe said, “She? Poor thing, she’s been dead nineteen years!” “Dead?” I whispered. “That or worse.” he said.

“She went to see her folks half a year after she got married. On her way back, on a Saturday evening in June, when she was almost here, the Indians captured her. She’s never been heard of since. Henry went insane. But he only gets bad when that time of year comes round. Then we drop in here, three days before she’s due, to encourage him up and listen to him read the letter. Saturday we all come and get everything ready for a dance. We’ve done it for nineteen years. The first Saturday there were twenty-seven of us, but only two now. We drug him to sleep through the night. Then he’s all right for another year.”

The two old men opened the door and disappeared into the darkness of Stanislau.

55. You can sense the existence of a woman from the following sentences EXCEPT “______”.

A. Soft winds touched the trees in Stanislau.

B. There was a bright rug on the shining wooden floor.

C. There were seashells, books and china vases full of flowers.

D. A little black shelf held a small picture of a woman.

56. Tom cried when Henry read the yellowed letter, because ______.

A. he was getting older and older

B. he was moved by the loving messages in the letter

C. he felt sad at the thought of Henry’s wife

D. he was disappointed that Henry’s wife would arrive so late

57. Tom stopped my reaching for whiskey because ______.

A. there was not enough whiskey for Henry          B. he didn’t want me to get drunk

C. that glass of whiskey was drugged                  D. it was for Henry’s wife

58. The underlined word “insane” probably means “______”.

A. depressed                B. disappointed       C. mad            D. sick

59. It can be inferred from the passage that ______.

A. Henry’s wife was 38 when she was last seen

B. Tom and Joe have heard the letter many times

C. the author stayed in Henry’s house because he was lost

D. the two miners came on Saturday to share past memories

60. The story is mainly about ______.

A. ever-lasting love                                         B. lifelong friendship

C. an unforgettable experience                             D. charming Stanislau

SAN FRANCISCO—A phone app (应用程序) in San Francisco gives information about open parking spots. City officials in San Francisco introduced the app to try to reduce traffic jams in the city, but some say it raises safety concerns.

In this city, drivers searching for parking spots lead to 30 percent of all downtown jams, city officials think. Now San Francisco has found a solution—a phone app for spot-seekers that displays information about areas with available spaces. The system, introduced last month, relies on wireless sensors (感应器) fixed in streets and city garages that can tell within seconds if a spot has opened up.

Monique Soltani, a TV reporter, said she and her sister spent 25 minutes on Friday trying to park. “We were praying to the parking god that we’d find a spot,” she said. “If we had the app, we would not have to pray to the parking god.” But the system could come with serious consequences.

Some people say that drivers searching for parking could end up focusing on their phones, not the road. “It could be really distracting (使分心的),” said Daniel Simons, a professor of psychology at the University of Illinois.

City officials acknowledge the potential problem. They are urging drivers to pull over before they use the city’s iPhone app, or to do so before they leave home. Nathaniel Ford, executive director of the San Francisco Municipal Transportation Agency, said safety could actually improve if drivers quickly found a spot instead of circling and getting frustrated.

San Francisco has put sensors into 7,000 parking spots and 12,250 spots in city garages. If spaces in an area open up, the sensors communicate wirelessly with computers that in turn make the information available to app users within a minute, said Mr. Ford, of the transportation agency. On the app, a map shows which blocks have lots of places (blue) and which are full (red).

More than 12,000 people have downloaded San Francisco’s app, which is available now only for the iPhone but which city officials say they hope to bring to all similar devices.

When it is started up, the city’s parking app warns drivers not to use the system while in motion. But safety advocates said that might not be sufficient. After all, they say, texting while driving is illegal in California and in many states, but a number of surveys, including one by the Pew Research Center, show that many Americans do it anyway.

Elizabeth Stampe, executive director of Walk San Francisco, a pedestrian advocacy group, said she hoped the new parking app would lead to fewer accidents.

“It’s an innovative idea,” she said. “The safe way for people to use the device is for them to pull over, which they know they should do. The question is whether they will.”

But Ms. Soltani, the TV reporter, said using the app would probably join the group of activities already performed by drivers.

“We’re already looking at Google Maps and Facebook on the phone while we drive,” she said. “Aren’t we always looking at something on our phone, or changing the radio, or drinking coffee? You’re always slightly distracted when you’re driving.”

50. What is the phone app mentioned in the text mainly aimed at?

A. Making full use of the parking spots.         B. Making the traffic flow smoothly.

C. Preventing traffic accidents.                            D. Benefiting iPhone users.

51. According to the text, San Francisco city officials ______.

A. don’t consider the app distracting             B. advise drivers to park cars slowly

C. are aware of the app’s disadvantages         D. believe more parking spots are needed

52. How do drivers locate the parking spots?

A. Sensorscomputersapp.                            B. Appcomputerssensors.

C. Sensorsappcomputers.                            D. Computersappsensors.

53. The phone app mentioned in the text ______.

A. is a bit slow in reacting                            B. hasn’t been put into service

C. was introduced several years ago                     D. can’t be downloaded to all phones

54. Which of the following is TRUE according to the text?

A. Daniel Simons thinks the app convenient.

B. San Francisco will put more sensors into use.

C. Most drivers open the app once they start their cars.

D. Nathaniel Ford doesn’t doubt the practical use of the app.

Homestay provides English language students with the opportunity to speak English outside the classroom and the experience of being part of a British home.

What to Expect

The host will provide accommodation and meals. Rooms will be cleaned and bedcovers changed at least once a week. You will be given the house key and the host is there to offer help and advice as well as to take an interest in your physical and mental health.

Accommodation Zones

Homestays are located in London mainly in Zones 2, 3 and 4 of the transport system. Most hosts do not live in the town centre as much of central London is commercial and not residential (居住的). Zones 3 and 4 often offer larger accommodation in a less crowded area. It is very convenient to travel in London by underground.

Meal Plans Available

♢ Continental Breakfast

♢ Breakfast and Dinner

♢ Breakfast, Packed Lunch and Dinner

It’s important to note that few English families still provide a traditional cooked breakfast. Your accommodation includes Continental Breakfast which normally consists of fruit juice, cereal (谷物类食品), bread and tea or coffee. Cheese, fruit and cold meat are not normally part of a Continental Breakfast in England. Dinners usually consist of meat or fish with vegetables followed by desert, fruit and coffee.

Friends

If you wish to invite a friend over to visit, you must first ask your host’s permission. You have no right to entertain friends in a family home as some families feel it is an invasion of their privacy.

Self-Catering Accommodation in Private Homes

Accommodation on a room-only basis includes shared kitchen and bathroom facilities and often a main living room. This kind of accommodation offers an independent lifestyle and is more suitable for the long-stay student. However, it does not provide the same family atmosphere as an ordinary homestay and may not benefit those who need to practice English at home quite as much.

46. The passage is probably written for ______.       

A. hosts willing to receive foreign students

B. foreigners hoping to know British culture

C. travelers planning to visit families in London

D. English learners applying to live in English homes

47. Which of the following will the host provide?

A. Room cleaning.                                       B. Medical care.

C. Free transport.                                        D. Physical training.

48. According to the passage, what does Continental Breakfast include?

A. Dessert and coffee.                                 B. Fruit and vegetables.

C. Bread and fruit juice.                              D. Cereal and cold meat.

49. Why do some people choose self-catering accommodation?

A. To experience a warmer family atmosphere.

B. To enrich their knowledge of English.

C. To entertain friends as they like.

D. To enjoy much more freedom.

 0  45310  45318  45324  45328  45334  45336  45340  45346  45348  45354  45360  45364  45366  45370  45376  45378  45384  45388  45390  45394  45396  45400  45402  45404  45405  45406  45408  45409  45410  45412  45414  45418  45420  45424  45426  45430  45436  45438  45444  45448  45450  45454  45460  45466  45468  45474  45478  45480  45486  45490  45496  45504  151629 

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网