(Q).
Read the article and select the best answer. Article: A breathtaking trick potentially left over from our ancestors might be found in us -- the ability to sense oxygen through our skin. Amphibians, animals such as frogs that can live both on land and in water, have long been known to be capable of breathing through their skin. In fact, the first known lungless frog that breathes only through its skin was discovered recently in the rivers of Borneo. Now the same oxygen sensors found in frog skins and in the lungs of mammals have unexpectedly been discovered in the skin of mice. "No one had ever looked," explained Randall Johnson, a biologist researcher. Mice and frogs are quite distant relatives, so the fact they have these molecules in common in their skin suggests they might well be found in the skin of other mammals, such as humans. "We have no reason to think that they are not in the skin of people too," Johnson said. These molecules not only detect oxygen, but help increase levels of vital red blood cells, which carry oxygen around the body. Normal mice breathing in air that is 10 percent oxygen--a dangerously low level similar to conditions at the top of Mount Everest, and about half that of air at sea level. However, mice that had the oxygen sensor HIF-1a genetically removed from their skin failed to produce this hormone even after hours of such low oxygen. These findings, if they hold true in humans, suggest one could raise the level of oxygen circulating inside the body. This could help treat lung diseases and disorders such as anemia without injecting drugs, which make up a multibillion-dollar market, Johnson said. Athletes also often try to get more oxygen delivered to their muscles in order to improve their performance. They often do this by training at high altitudes or in low-oxygen tents. The new study suggests they might want to expose their skin as well as breathing in low-oxygen air to improve their performance. "It's hard to say what exactly might be done, however--there's a lot we don't know yet," Johnson explained. The scientists... Question: The best title of the passage may be _ . Options: A: Humans Might Sense Oxygen Through Skin B: Frogs And Mice Are Distant Relatives C: First Known Animal Breathes Through Skin D: Great Findings Benefits Athletes A Lot
(A).
A

(Q).
Read the article and select the best answer. Article: A Nobel Prize is considered by most people one of the highest international honors a person can receive. As you know, the prizes were started by a Sweden called Sweden Alfred Nobel. Alfred Nobel was born in Stockholm, the capital of Sweden, and lived from 1833 to 1896. Alfred Nobel was a chemist and inventor. He made two important inventions, so he became very rich. Although he was rich, Nobel was not a happy man. He never married or had children. Also, he was a sick man in large part of his life. Nobel died at the age of sixty-three. When he died, he left a fund of $9,000,000. The money was to be used in giving prizes to those who made outstanding achievement in physics, chemistry, medicine, literature, and the promotion of the world peace. The first Nobel Prize were given on December 10th,1901, five years after Nobel's death. Many famous people all over the world have been given Nobel Prizes for their achievements. Albert Einstein was one of them. Each prize has three parts. The first part is a gold medal. Second, a winner of a Nobel Prize is given a diploma saying that he has been given the prize. The third part of the prize is a large amount of money---about $40,000. Often a prize is given to just one person, but not always. Sometimes a prize is shared. It might be given to two or more people who have worked together. It is also sometimes true that a prize is not given at all if there is no outstanding achievement. In 1972, for example, not a Nobel Prize was given. It is the Nobel Foundation in Stockholm that decides whether to give the prize or not. Question: Most people think that Nobel Prize is _ a person can receive. Options: A: the highest honor in the world B: one of the highest international honors C: a higher honor than others D: as high as any other honor
(A).
B

(Q).
Read the article and select the best answer. Article: Sometimes people call each other " scared cat" , but have you ever thought about this expression? When a cat is frightened, its heart starts beating faster, its muscles get tense, and there are changes in the chemicals in its blood-stream. If the danger continues, this animal will do one of the two things. It will defend itself, or it will run away as fast as it can. Something like this also happens to people. When we are excited, angry, scared, or aroused by other emotions, our bodies go through many physical changes. Our hearts beat faster, and our muscles get tense. All of these changes make us more alert and ready to react. We, too, get ready to defend ourselves or run. Human beings, however, have a problem. If we give way to our feelings and let them take over, we can get into trouble. Have you ever said something in anger - and regretted later? Have you ever shouted at a teacher or told somebody you were lonely and then wished later you had kept your mouth shut? It isn't always wise to express your feelings freely. Does this mean that it's always smarter to hide our feelings? No! If you keep feelings like anger hidden away or bottled up inside, your body stays tense. Physical illnesses can develop, and you can feel disturbed badly inside. _ can actually be bad for your health. Feelings that you keep all bottled up inside don't just go away. It's as if you bought some bananas and stuck them in a cupboard. You might not be able to see them, but before long you'd smell them. And if you opened the cupboard, chances are you'd see little fruit flies hovering all over them. They'd be rotten. You can try to treat emotions as if they were bananas in the cupboard. You can hide them and you can pretend they don't exit, but they'll still be around. And at last you'll have to deal with them, just like those bananas. Question: According to the passage, human beings get into trouble because _ . Options: A: they are not as alert as animals B: they always do something wrong to other people C: they sometimes can't control their feelings D: they don't pay attention to their physical changes
(A).
C