Question: Read the article and select the best answer. Article: Eating too much fatty food, exercising too little and smoking can raise your future risk of heart disease. But there is another factor that can cause your heart problems more immediately: the air you breathe. Previous studies have linked high exposure to environmental pollution to an increased risk of heart problem, but two analyses now show that poor air quality can lead to heart attack or stroke within as little as a few hours after exposure. In one review of the research, scientists found that people exposed to high levels of pollutants were up to 5% more likely to suffer a heart attack within days of exposure than those with lower exposure. A separate study of stroke patients showed that even air that the U. S. Environmental Protection Agency (EPA) considers to be of "moderate" quality and relatively safe for our health can raise the risk of stroke as much as 34% within 12 to 14 hours of exposure. The authors of both studies stress that these risks are relatively small for healthy people and certainly modest compared with other risk factors such as smoking and high blood pressure. However, it is important to be aware of these dangers because everyone is exposed to air pollution regardless of lifestyle choices. So stricter regulation by the EPA of pollutants may not only improve environmental air quality but could also become necessary to protect public health. Question: The author's purpose of writing the text is most likely to _ . Options: A: inform B: persuade C: describe D: entertain
Answer: A

Question: Read the article and select the best answer. Article: It is sometimes said that strange flying objects have been seen high up in the sky. People call these strange objects Unidentified Flying Objects(UFOs). These UFOs caused a lot of interest. Some of the reports about them are difficult to believe. Some have been explained in scientific ways. Others have never been explained. Here is an account of UFOs from a report. Dennis Burdens, who wrote an article, tells us that he once saw a UFO himself. He was having dinner one night with a friend near Tripoli, Libya, and after dinner the two men walked across a yard to his room to look at some papers. Burdens noticed that the moon looked strange that night. "It wasn't the moon," was the reply. They watched the light and saw that it was moving. It seemed to be an object rather like a big plate. In some ways it looked like smoke with a light on it, but it wasn't smoke because it didn't change its shape. It was moving in a regular way. That is to say, it didn't go suddenly faster or more slowly, and it didn't go higher or lower. So the two men decided that there must be men in it. After that, Burdens said that he felt eyes looking at him. He was being watched in the darkness. When it was nearer, they noticed that the bottom parts were brighter than the top. The bottom was yellow and the top red. Then the object suddenly turned away and left Libya, moving very fast. On a later day Burdens talked to other people about it, and he found some who had seen it. They all described it in the same way. Could they all be mistaken? Question: UFOs are _ . Options: A: flying high up in the sky B: strange flying objects C: difficult to believe D: very interested
Answer: B

Question: Read the article and select the best answer. Article: Children's allowance. Many children first learn the value of money by receiving an allowance . The purpose is to let them learn from experience at an age when financial (;;)mistakes are not very costly. In any case, parents should make clear what the child is expected to pay for with the money. At first, young children may spend all of their allowance soon after they receive it. If so, they'll learn the hard way that spending must be done within a budget . Parents are usually advised not to offer more money until the next allowance. It is to show them that a budget demands choices between spending and saving. Many people who have written on the subject of allowances say it is not a good idea to pay your child for work around the home. These jobs are a normal part of family life. Paying children to do extra work around the house, however, can be useful. It can even provide an understanding of how a business works. Allowances give children a chance to experience what they can do with money. They can share it in the form of gifts or give it to a good cause. They can spend it by buying things they want. Or they can save it. Saving helps children understand that costly goals require sacrifice: They have to cut costs and plan for the future. Requiring children to save part of their allowance can also open the door to future saving and investing. Many banks offer services to help children learn about personal finance. Question: Giving children an allowance can mostly help them _ . Options: A: cut their living costs B: learn to plan for the future C: earn a living when young D: get some financial knowledge
Answer:
D