Article: I was asked in an email about learning idioms in a foreign language. Maybe I am different from most people,but I do not bother with them. To me they are kind of dessert of language learning. They come at the end of a meal. Once you have filled up with the key words and phrases that are used in a variety of situations,then you can add a few idioms. And by that time, you will be able to pick them up naturally anyway. I find that many learners have trouble with idioms,as if repeating some very colloquial expressions is going to upgrade how they sound in a language. In fact, it is the opposite. Idioms are difficult to use correctly. Yes,occasionally you hear idioms and do not understand. But,in my experience,there are always situations where you do not understand. It is best to focus on the most important words,what they mean and how they are used. Certainly,it is best for a nonnative speaker to stick to standard speech. Some teachers even try to teach the "real language".Then you hear nonnative speakers saying things like "I goanna", "You wane" etc. You will learn all the idioms you need just by exposing yourself to the language. In general,you can save any phrase that you find interesting,and if that includes idioms,go to it. But I would not make any special effort to go after idioms. I,in fact,avoid them. If I come across something in Russian that strikes me as a particularly idiomatic use of words,I just leave it aside; do not even bother trying to learn it. If it keeps on appearing,then I will learn it. Question: How did the writer develop the passage? Yes or no, is the answer "By giving explanations."?
Yes

(Question)
Article: Thick dust rose and a large building collapsed. This was the scene in Zhu Zhou,Hunan Province on May 17. Nine people were killed and 16 injured. Things were similar in the Sichuan earthquake. Thousands of people were buried in the ruins and lost their lives. What if we could have warned them? People are always _ to find a way of preventing buildings' collapse. Better materials and technology help,but they are not a solution. Just like humans,a building has its own life cycle from "birth" to "death".If we know when a building is going to collapse,we can repair it in advance or get out of it before it falls. Now,scientists at the University of Illinois have developed a material that turns red before it breaks. The invention could be used in things like climbing ropes or bridge supports. The research was led by Nancy Sottos,a professor at the university's Beckman Institute,and Douglas Davis,a graduate research assistant. The secret behind the color--changing material is a type of molecule .A molecule is a group of atoms held together by chemical bonds. Imagine you and your friends standing in a circle,holding hands. Each person stands for one atom,your hands represent the bonds,and the entire circle represents a molecule. If one person lets go of his or her hands,the molecule changes color. The research team put the molecule into a soft material. When the researchers stretched the material,it turned bright red for a few seconds before it broke into two pieces. When they repeatedly stretched and relaxed the material,without breaking it,it only turned a little red. The major problem is that light can get rid of the red color. When the team shone bright light on the molecule,the broken bond was fixed,and the color disappeared. Scientists have yet to do more research before the color--changing molecules can be used outside the lab. Question: Which of the following is a WRONG statement? Yes or no, is the answer "A new material has been applied to buildings to warn people of collapse."?
(Answer)
No

Ques: Article: Think about what you usually have for a meal: Is it a hamburger? What about vegetables? Would it surprise you to learn that what you eat can affect the whole planet? It can--in a big way. Scientists attending the American Association for the Advancement of Science meeting in Chicago presented new studies showing how food and its production affect the globe and its warming climate. It is generally believed that global warming is caused by the large amounts of greenhouse gases released into the atmosphere. One of these greenhouse gases is carbon dioxide. What does this have to do with food? A big part of the carbon dioxide comes from the process of making and eating food, the scientists reported in Chicago. The production of meat contributes to a lot of that carbon dioxide. The process of making a hamburger, for example, requires a lot of energy. A cow has to be fed and raised on farmland, and cow manure is a major source of methane --an especially powerful greenhouse gas. By the time a hamburger is finally served on a dinner plate, it has done great harm to the environment. The message from the research is clear: We can greatly reduce the production of greenhouse gases by eating less meat. All kinds of meat, the scientists reported, are harder on the planet than vegetables. To grow and eat a pound of potatoes, for example, sends less than one-quarter pound of carbon dioxide or other greenhouse gases into the air. So shifting our diet to less meat and more vegetables ,as it turns out, may do the world some good. Question: According to the passage , the writer seemingly intends to _ . Yes or no, is the answer "appeal to us to protect the environment by eating less meat food."?
Ans: No

Question: Article: As the population of the planet increases, so does the number of homes, businesses, parking lots, schools, airports and roadways. All these structures use electricity and need to be lighted. Humans demand these lights. They want their homes more comfortable and they want their streets safe. The problem is that researchers are finding that all the light is having a negative effect on humans and wildlife as well. Less than 10 years ago I drove to a thinly populated section of my town, lay down in the middle of the road and watched an attractive meteor shower . The area was short of homes, street lights and traffic. If I did that today, I wouldn't be able to see the meteor shower as well. Due to the increase in street lights, I would surely be run over by a car. Nowadays scientists are finding light pollution can be almost as bad as carbon dioxide pollution. If you've ever taken a flight at night, the view is beautiful, but you must remember that all the light you see wastes electricity. The crew of the space shuttles see an even bigger picture of how extensive the wasted electricity is worldwide. One of the saddest parts of light pollution is that most of it is unnecessary and most of the outdoor light that we use is wasted. One only needs to look at a row of street lights to see how much of the light shines upwards and lights the sky; a total waste of electricity. Additionally, somewhere electricity needs to be produced, and the production of electricity creates pollution by releasing greenhouse gases. This affects the air we breathe and our quality of life. Scientists are also studying the effects of light pollution on wildlife. Thousands of birds die each year when they crash into highly lighted buildings, as they become puzzled by the light. It has been long known that tiny baby sea turtles become lost and follow lights on the shore instead of heading towards the sea. Fortunately, light pollution is one of the easiest sources of pollution that can be corrected without a negative effect. Following some... Question: What can be inferred from the text? Yes or no, is the answer "Some animals use natural light to direct their movements."?
Answer:
No