Read the following article and select the best answer. Article: Four hundred years ago, an Italian scientist named Galileo Galilei became the first person to see the craters on the moon. Galileo was one of the first people to use a telescope to study the sky. Since then, telescopes have become the most important tool used by astronomers. Scientists never stop finding new ways to make these instruments more powerful. In the next several years, two new telescopes with different purposes are to be used. One of the telescopes, called Pan-STARRS, could save humans from dying out. Nick Kaiser, a scientist who works on the project, says the Pan-STARRS telescope has been designed to find "90 percent of all killer asteroids near Earth". Pan-STARRS, like most telescopes, uses mirrors and lenses to provide pictures of outer space. Giant mirrors are used to "gather" light. They reflect the light onto the lens of a camera, which can then record the image. When completed, Pan-STARRS will include four telescopes which will be put on top of a mountain on the Hawaiian island of Maui. Only one telescope is in place and working now. Each telescope will take pictures of one patch of sky for about 30 seconds, and then move on to another patch. Every night, each telescope will take pictures of about 1,000 patches. Every week, each telescope will have photographed the whole sky. Each of the four telescopes will take pictures of the same patches of sky. One telescope, working alone, may sometimes incorrectly show an asteroid. If there are three other telescopes working, astronomers can use them to see if there really is an asteroid coming our way. By using four telescopes instead of one, scientists hope to get a better picture of space. If a giant asteroid was identified, astronomers would try to break it up long before it reached Earth. Question: Galileo Galilei is mentioned to _ . - tell us the history of telescopes - introduce the topic of the passage - show people his contributions - tell us about the craters on the moon
introduce the topic of the passage

Read the following article and select the best answer. Article: Criticism is judgement.A critic is a judge.A judgement study and think about the material presented to him, accept it, correct it, or reject it after thinking over what he has read, watched or heard. Another word for criticism is appreciation.When I criticize or appreciate some objector another, I look for its good points and bad points.In reading any printed or written matter, I always have a pencil in hand and put any comments in the book or on a separate paper.In other words, I always talk back to the writer. That sort of critical reading might well be called creative reading because I am thinking along with the author, asking him questions, seeing whether he answers the questions and how well he answers them.I mark the good passages to store them in my memory piece of writing; where, how and why could or should I improve upon it? You might think that doing what I suggested is work.Yes, it is, but the work is a pleasure because I can feel my brain expanding, my emotion reacting and my way of living change. Reading exercises is a great influence on a person.If pictures, still or moving, accompany the reading, the memory will retain the material for a long time. Just as evil books can corrupt, so also can good books gradually work a change on a corrupt person. Let's get back to the beneficial effects of thinking while reading.It helps us to enlarge our minds.We understand more about the universe, its people and many of its wonders.We learn to think and observe in new ways.We certainly do get a feeling for the language we are reading.All good writers in any language have been readers who read critically and continuously. Question: We can learn from the passage that all good readers _ . - understand more about their surrounding than others. - have a thorough insight to the problem in life. - have the feeling of the language they read. - have read extensively and critically
have read extensively and critically

Read the following article and select the best answer. Article: Moods, say the experts, are feelings that are likely to become fixed, having effects on one's outlook (way of looking at things) for hours, days or even weeks. That's great if your mood is a pleasant one, but a problem if you are sad, anxious, angry, or simply lonely. Perhaps the best way to deal with such moods is to talk them out; sometimes, though, there is no one to listen. Modern pharmacology offers a lot of tranquilizers and anti-anxiety drugs. What many people don't realize, however, is that scientists have discovered the effectiveness of several non-drug methods to make you free from an unwanted mood. These can be just as useful as drugs, and have the added benefit of being nonpoisonous. So next time you feel out of sorts, don't head for the drug store--try the following method. Of all the mood-changing self-help techniques, aerobic exercise seem to be the best cure for a bad mood. --If you could keep the exercise, you'd be in high spirits, says Kathryn Lance, author of Running for Health and Beauty. Researchers have explained biochemical and various other changes that make exercise a better mood-raiser than drugs. Physical work such as housework, however, does little. The key is aerobic exercise - running, cycling, walking, swimming, or other repetitive and sustained activities that increase the heart rate and circulation , and improve the body's use of oxygen. Do them for at least 20 minutes a time, three to five times a week. Question: What is the main subject of the passage? - How to beat a bad mood. - How to talk bad moods out. - How to do physical exercises. - How to do aerobic exercise.
How to beat a bad mood.

Read the following article and select the best answer. Article: Like distance runners on a measured course,all of us will move through time in a roughly predictable pattern. In the first stage of our lives,we develop and grow, reaching toward the top of physical vitality . After we grow up,however, the body begins a process of gradually wearing out. A new awareness of physical fitness may help lengthen our years of health and vitality,yet nothing we do will work to stop the unavoidable force of aging. Most of the changes of aging take place deep inside the body.The lungs become less able to take in oxygen.Powerful muscles gradually lose their strength.The heart loses power and pumps less blood.Bones grow easier to break. Finally, we meet a stress,a stress that is greater than our physical resistance.Often,it is only a minor accident or chance infection(a disease caused by virus),but this time, _ brings life to an end. In 1932,a classic experiment nearly doubled the lifetime of rats,simply by cutting back the calories in their diet The reason for the effect was then unknown. Today, at the University of California at Berkley, Dr.Paul Seagle has also greatly lengthened the normal lifetime of rats.The result was achieved through a special protein limited diet,which had a great effect on the chemistry of the brain.Seagle showed that within the brain,specific chemicals control many of the signals that influence aging.By changing that chemical balance,the clock of aging can be reset. For the first time, the mystery of why we age is being seriously challenged.Scientists in many fields are now making striking and far-reaching discoveries. An average lifetime lasts 75 years,yet in each of us lies a potential for a longer life.If we could keep the vitality and resistance to disease that we have at age twenty, we would live for 800 years. Question: Which of the following is not a change of aging? - People gradually lose their muscle strength. - Bones tend to break more easily. - The heart loses power and pumps less blood. - The lungs become unable to take in oxygen.
The lungs become unable to take in oxygen.