Australian scientists say an organic compound(复合物) used by Indian women to paint dots or bindi on their foreheads could hold the key to a breakthrough in cancer treatment. Rose Bengal was first used in the early 1900s as a dye for food, textiles and cosmetics. But now it is proving to be a useful weapon in the fight against skin cancer.
Television advertisements constantly warn of the dangers of overexposure to the fierce sun. Among them is the possibility of the disease melanoma(黑瘤), a type of skin cancer. More than 1,200 Australians die every year from the disease.
Initial trials of a solution of Rose Bengal injected into some melanoma cells have had a 75 percent success rate in controlling the disease. Professor John Thompson, the director of the Melanoma Unit at the University of Sydney, says this organic dye could become a powerful cancer-fighting treatment.
“We believe it works by getting into the tumor(肿块) cells and causing them to self-destruct. But the exact mechanism by which it works is not totally clear. It’s not useful for people who have a primary melanoma. The treatment of primary melanoma is surgical excision(切除),”he said. “It’s useful to inject tumors for people who have recurrences; when the primary treatment has failed and when recurrence in the area, or at more distant sites has occurred.”
About 90 percent of Australians who develop melanoma survive thanks to early diagnosis and treatment. If left untreated, however, the disease can be fatal.
Convincing younger people in Australia about the dangers of overexposure to the sun is a battle campaigners are constantly waging.
Veronica Manock, a 21-year-old student, had two major operations to remove a cancerous tumor from her leg.
“I’ve had a lot of friends who just said ‘I thought it was just, you know, I’ll get a mole(痣) cut out and that’s it’, whereas I don’t think people realize how much danger they’re putting themselves into and how easy it is to stop something like this happening to you just from doing little things,”said Marock.
Other researchers in Australia are investigating genetic treatments to skin cancer. There is a pressing need for such research to produce effective treatments. Australians, the majority of whom are fair-skinned(浅肤色的), are four times more likely to develop a melanoma than people in Canada, the United States or Great Britain.The information about Rose Bengal is wrong EXCEPT that .
| A．it is no longer used as a dye |
| B．it is used to cure skin cancer |
| C．it is a special kind of rose planted in Australia |
| D．it can be effective in treating skin cancer |
The main reason for Australia’s high rate in skin cancer is .
| A．the overuse of cosmetics |
| B．overexposure to the sun |
| C．the color of their skin |
| D．the lack of prevention |
From the passage we can learn that .
| A．skin cancer is incurable |
| B．some young people seem to know little about the danger of overexposure to the sun |
| C．about ninety percent of Australians are likely to develop melanoma |
| D．all moles should be cut out to prevent skin cancer |
According to Professor John Thompson, the best way to deal with primary cancer is .
| A．injecting tumors |
| B．taking some medicine |
| C．getting genetic treatment |
| D．having surgical excision |
The passage was intended for .
| A．general readers |
| B．people who like taking sun-bathing |
| C．doctors and researchers |
| D．children at school |
James Cleveland Owens was the son of a farmer and the grandson of black slaves. His family moved to Cleveland when he was 9.There, a school teacher asked the youth his name.
"J.C., "he replied.
She thought he had said "Jesse", and he had a new name.
Owens ran his first race at age 13.After high school, he went to Ohio State University. He had to work part time so as to pay for his education. As a second year student in the Big Ten games in 1935, he set even more records than he would in the Olympic Games a year later.
A week before the Big Ten meet, Owens accidentally fell down a flight of stairs. His back hurt so much that he could not exercise all week, and he had to be helped in and out of the car that drove him to the meet. He refused to listen to the suggestions that he give up and said he would try, event by event. He did try, and the results are in the record book.
The stage was set for Owens victory at the Olympic Games in Berlin the next year, and his success would come to be regarded as not only athletic but also political. Hitler did not congratulate any of the AfricanAmerican winners.
"It was all right with me, "he said years later."I didn’t go to Berlin to shake hands with him, anyway."
Having returned from Berlin, he received no telephone calls from the president of his own country, either. In fact, he was not honored by the United States until 1976, four years before his death.
Owens Olympic victories made little difference to him. He earned his living by looking after a school playground, and accepted money to race against cars, trucks, motorcycles and dogs.
"Sure, it bothered me, "he said later." But at least it was an honest living. I had to eat."
In time, however, his gold medals changed his life."They have kept me alive over the years, "he once said. "Time has stood still for me. That golden moment dies hard."
Owens got his other name "Jesse" when.
A. he went to Ohio State University
B. his teacher made fun of him
C. his teacher took "J. C."for "Jesse"
D. he won gold medals in the Big Ten meet
In the Big Ten meet，Owens
| A．hurt himself in the back | B．succeeded in setting many records |
| C．tried every sports event but failed | D．had to give up some events |
We can infer from the text that Owens was treated unfairly in the US at that time because.
| A．he was not of the right race |
| B．he was the son of a poor farmer |
| C．he didnˊt shake hands with Hitler |
| D．he didnˊt talk to the US president on the phone |
When Owens says "They have kept me alive over the years ",he means that the medals.
| A．have been changed for money to help him live on |
| B．have made him famous in the US |
| C．have encouraged him to overcome difficulties in life |
| D．have kept him busy with all kinds of jobs |
What would be the best title for the text?
| A．Jesse Owens, A Great American Athlete |
| B．Golden Moment — A Lifetime Struggle |
| C．Making A Living As A Sportsman |
| D．How To Be A Successful Athlete |
Why do men die earlier than women? The latest research makes it known that the reason could be that men's hearts go into rapid decline when they reach middle age.
The largest study of the effects of ageing on the heart has found that women's longevity may be linked to the fact that their hearts do not lose their pumping power with age.
"We have found that the power of the male heart falls by 20--25 percent between 18 and 70 years of age,”said the head of the study, David Goldspink of Liverpool John Moores University in the UK.
"Within the heart there are millions of cells that enable it to beat. Between the age of 20 and 70，one-third of those cells die and are not replaced in men,”said Goldspink. "This is part of the ageing process."
What surprises scientists is that the female heart sees very little loss of these cells. A healthy 70-year-old woman's heart could perform almost as well as a 20-year-old one's.
"This gender difference might just explain why women live longer than men,”said Goldspink.
They studied more than 250 healthy men and women between the ages of 18 and 80，focusing on healthy persons to remove the confusing influence of disease.
The team has yet to find why ageing takes a greater loss on the male heart, said Goldspink.
The good news is that men can improve the health of their heart with regular exercise. Goldspink stressed that women also need regular exercise to prevent their leg muscles becoming smaller and weaker as they age.
The underlined word“longevity" in the second paragraph probably refers to ______.
| A．health | B．long life | C．ageing | D．effect |
The text mainly talks about ______.
| A．men's heart cells | B．women's ageing process、 |
| C．the gender difference | D．hearts and long life |
According to the text, the UK scientists have known that
| A．women have more cells than men when they are born |
| B．women can replace the cells that enable the heart to beat |
| C．the female heart loses few of the cells with age |
| D．women never lose their pumping power with age |
If you want to live longer, you should
| A．enable your heart to beat much faster |
| B．find out the reason for ageing |
| C．exercise regularly to keep your heart healthy |
| D．prevent your cells from being lost |
We can know from the passage that
| A．the reason why ageing takes a greater loss on the male heart has been found out |
| B．scientists are on the way to finding out why the male heart loses more of the cells |
| C．the team has done something to prevent the male from suffering the greater loss |
| D．women over 70 could lose more heart cells than those at the age of 20 |
The day was Thankful Thursday. It's a weekly tradition that my two little girls and I began years ago. Thursday has become our day to go out and make a positive contribution. On this particular Thursday, we had no idea exactly what we were going to do. At noon, I drove to a McDonald’s with my daughters because they kept complaining that they hadn’t had enough to eat at breakfast. There we saw some homeless people in the street and we bought lunch for them.
We were about to complete when we found a small woman standing at the corner, asking for change. We handed her some food, and then started to head home. Suddenly from the mirror of the car, I saw the woman waving at us, so I had to turn around and stopped where the small woman stood. She walked to our car, and said, "Thank you, lady! No one has ever done anything like this for me before." I replied, "Well, I'm glad that we were the first." Feeling uneasy, and wanting to move the conversation along, I asked, "So, when do you think you'll eat your lunch?"
She just looked at me with her huge, tired brown eyes and said, "Oh honey, I'm not going to eat this lunch." I was confused, but before I could say anything, she continued. "You see, I have a little girl of my own at home and she just loves McDonald's, but I can never buy it for her because I just don't have the money. But you know what…tonight she is going to have McDonald's!"
I don't know if the kids noticed the tears in my eyes. So many times I had questioned whether our Acts of Kindness were too small to have effect on those poor people. Yet at that moment, I realized the truth of Mother Teresa's words: "We cannot do great things — only small things with great love."
According to this passage, the small woman was ______.
| A．too happy to stand at the corner |
| B．too eager to ask for more food |
| C．too poor to buy McDonald’s |
| D．too busy to care for her daughter |
What can we know from the passage?
| A．The author finally realized what she did was of use to the poor. |
| B．The author would stop doing her acts of kindness to the poor. |
| C．The author’s daughters found their mother cried at the end of the day. |
| D．The author’s daughters would make friends with the woman’s daughter. |
What would be the best title of the passage?
| A．No Pains No Gains |
| B．No Pleasure Without Pain |
| C．No Small Act of Kindness |
| D．No Sweet Without Sweat |
In a book called Magnificent Obsession, by Lloyd C. Douglas, a description is given of people helping others but doing it secretly. When difficult problems worried an individual, friends nearby would meet to discuss possible solution without the individual knowing their actions. When a solution was agreed upon, one or two of the friends would carry out the plan and solve the problem secretly , to the great delight of the worried individual. The helpers would stand by privately, content with their success. No reward was given to the problem solvers, not even a sincere “thank you”, because they were never known.
This concept is popular today but in a different way. The phrase “pay it forward” is now used when one person helps another. However, the person helped may not be able to repay the person or group that helped them. So rather than return the favor to their helpers, they are supposed to help someone else in the future, which means they pay it forward. It is a sense of responsibility which makes us want to give back in equal measure to the one who has helped us. But , in this case, the responsibility turns to helping someone in the future.
Suppose your elderly grandmother pays part of your schooling. She may tell you there is no need to repay her because it is a gift from someone who loves you very much. Nothing would please her more than to have you use her money to get a good education.
You may never be able to repay her for such a gift. However, she not only gave you some money , but she provided you with an example that you should also help other people who need it.
People with serious needs are everywhere. Many are children who need better clothes, more books and even better schools. Some are elderly people who can’t afford their medicine or a doctor’s care. Consider how you can “pay it forward” rather than pay money back to your grandmother.
The underlined word “pay it forward” means ____________________.
| A．to repay someone who has helped you |
| B．to pay someone else who needs help |
| C．to help someone who has helped you |
| D．to help someone else who needs help |
What does the writer suggest with the example of “your elderly grandmother”?
| A．We should learn to respect our grandparents. |
| B．We should work hard to get a good education. |
| C．We should also lend a hand to other people in need of help. |
| D．We should never forget to repay people for their help. |
From the passage we know_________________.
| A．everybody needs help |
| B．more children need help than elderly people |
| C．it costs a lot of money to “pay it forward” |
| D．nowadays many people help others without being repaid |
By writing the passage, the author wishes people in the world to be _____________.
| A．unselfish | B．mysterious | C．honest | D．unforgettable |
It may help you to know that there is no such thing as a perfect speech．At some point in every speech, every speaker says something that is not understood exactly as he has planned．Fortunately, the moments are usually not obvious to the listeners. Why? Because the listeners do not know what the speaker plans to say. They hear only what the speaker does say. If you lose your place for a moment, wrongly change the order of a couple of sentences, or forget to pause at a certain point, no one will be any the wiser．When such moments occur, don’t worry about them, Just continue as if nothing happened．
Even if you do make an obvious mistake during a speech, that don’t really matter. If you have ever listened to Martin Luther King’s famous speech – “ I have a dream”, you may notice that he stumble（结巴）his words twice during the speech．Most likely, however, you don’t remember．Why? Because you were fixing your attention on is message rather than on his way of speech-making. People care a lot about making mistakes in a speech because they regard speech-making as a kind of performance rather than as an act of communication. They feel the listeners are like judges in an ice-skating competition．But, in fact, the listeners are not looking for a perfect performer. They are looking for a well-thought-out speech that express the speaker’s ideas clearly and directly．Sometimes a mistake or two can actually increase a speakers’ attractiveness by making him more human．
As you work on your speech, don’t worry about being imperfect．Once you free your mind of this, you will find it much easier to give your speech freely．
The underlined part in the first paragraph means that no one will ___________．
| A．be smarter than you | B．notice your mistakes |
| C．do better than you | D．know what you are talking about |
You don’t remember obvious mistakes in a speech because ___________．
| A．your attention is on the content |
| B．you don’t fully understand the speech |
| C．you don’t know what the speaker plans to say |
| D．you find the way of speech-making more important |
It can be inferred from the passage that ___________．
| A．giving a speech is like giving a performance |
| B．one to two mistakes in a speech may not be bad |
| C．the listeners should pay more attention to how a speech is made |
| D．the more mistakes a speaker makes, the more attractive he will be |
What would be the best title of the passage?
| A．How to Be a Perfect Speaker |
| B．How to Make a Perfect Speech |
| C．Don’t Expect a Perfect Speech |
| D．Don’t Expect Mistakes in a Speech |
粤公网安备 44130202000953号