Question: Read the following article and select the best answer. Article: In many countries the standard of living enjoyed by their people has increased rapidly in recent years. Sadly, not everyone in these countries is so fortunate and many people in rich countries are homeless. The reasons for homelessness are various, but poverty is undoubtedly one of the main causes. The homeless people may have become jobless and then been unable to pay their rent and so no longer have _ . Often, the fact that unemployed people get help from the government prevents this from happening, but not always. Some homeless people are mentally ill and have no one to look after them. Some are young people who, for one reason or another, have left home and have nowhere to live. Many of them have had a serious disagreement with their parents and have left home, choosing to go to a city and live on the streets. Sometimes they have taken such action because they have been unable to get on with a step-parent. Many homeless people get into the habit of begging to get enough money to stay alive, but many of the general public refuse to give anything to beggars. Often they are moved on by the police, being accused ,whether rightly or wrongly, of forceful begging . There are many who disrespect homeless people. Some cynics declare that homeless people choose to live the life which they lead. But who would willingly choose to live in a shop doorway, under a bridge or in a cardboard box? Question: According to the text, what causes some people to be homeless? - Lack of money. - The increased standard of living. - No government help. - Agreement with their parents.
Answer: Lack of money.

Question: Read the following article and select the best answer. Article: Born into a poor family,two of the Durers' children still had a dream for art,but they knew their father could not afford to send either of them to the academy . After discussions,the two boys finally agreed to toss a coin.The loser would go to the nearby mines and support his brother while he attended the academy.Then,when the winner completed his studies,he would support the other brother,either with sales of his art work or,if necessary,by working in the mines.So they tossed a coin.Albrecht Durer won the toss and went to Nuremberg.Albert went to the dangerous mines and financed his brother,whose work at the academy was almost an immediate success,and by graduation,he was beginning to earn considerable fees for his works. When the Durer family held a dinner to celebrate Albrecht's homecoming, Albrecht drank a toast to his brother,"Now,Albert,it is your turn to go to Nuremberg and follow your dream,and I will take care of you." Albert wiped the tears from his cheeks,glanced at the faces he loved,and said softly,"No,brother.It is too late for me.Look....look what four years in the mines have done to my hands! The bones in every finger have been broken at least once,and lately I have been suffering from arthritis so badly in my right hand that I cannot even hold a glass to return your toast,much 1ess make lines on canvas with a pen or a brush.No,brother ...for me it is too 1ate." Therefore,Albrecht took pains to draw his brother's injured hands with palms together and thin fingers stretched skyward.The entire world almost immediately opened their hearts to his great masterpiece and named it "The Praying Hands". Question: The passage is mainly about - the early life of Albrecht Durer - the story behind "The Praying Hands" - the sacrifice Albrecht made for his brother - a young man showing his talent through effort
Answer: the story behind "The Praying Hands"

Question: Read the following article and select the best answer. Article: Unlike chemists and physicists, who usually do their experiments using machines, biologists and medical researchers have to use living things like rats. But there are three Nobel prize-winning scientists who actually chose to experiment on themselves - all in the name of science, reported The Telegraph. 1. Werner Forssmann (Nobel prize winner in 1956) Forssmann was a German scientist. He studied how to put a pipe inside the heart to measure the pressure inside and decide whether a patient needs surgery. Experiments had been done on horses before, so he wanted to try with human patients. But it was not permitted because the experiment was considered too dangerous. Not giving up, Forssmann decided to experiment on himself. He anaesthetized his own arm and made a cut, putting the pipe 30 centimeters into his vein. He then climbed two floors to the X-ray room before pushing the pipe all the way into his heart. 2. Barry Marshall (Nobel prize winner in 2005) Most doctors in the mid-20th century believed that _ was down to stress, spicy food or an unusually large amount of stomach acid. But in 1979 an Australian scientist named Robin Warren found that the disease might be related to a bacteria called Helicobacter pylori. So he teamed up with his colleague, Barry Marshall, to continue the study. When their request to experiment on patients was denied, Marshall bravely drank some of the bacteria. Five days later, he lost his appetite and soon was vomiting each morning - he indeed had gastritis. 3. Ralph Steinman (Nobel prize winner in 2011) This Canadian scientist discovered a new type of immune system cell called the dendritic cell. He believed that it had the ability to fight against cancer. Steinman knew he couldn't yet use his method to treat patients. So in 2007, when doctors told him that he had cancer and that it was unlikely for him to live longer than a year, he saw an opportunity. With the help of his colleagues, he gave himself three different vaccines based on his research and a total of eight... Question: What's the main purpose of the article? - To introduce a few Nobel prize winners who did experiments on themselves. - To list difficulties that scientists went through in order to make important discoveries. - To explain why some scientists chose to experiment on themselves. - To introduce some dangerous experiments that Nobel prize winners did on themselves.
Answer:
To introduce a few Nobel prize winners who did experiments on themselves.