Read the following article and select the best answer. Article: Even before there were people, there were cases of air pollution. There were dust storms. Volcanoes erupted, sending ash and poisonous gases into the atmosphere. When people appeared on the scene and began their conquest of nature, they also began to pollute the air. They cleared land, which made possible even larger dust storms. They built cities, and the soot from their hearths filled the air. The Roman author Seneca wrote in A.D. 61 of the "stink, soot and heavy air "of the imperial city. In 1257, the Queen of England was forced to move away from the city of Nottingham because the heavy smoke was unbearable. The industrial revolution brought even worse air pollution. Coal was burned to power factories and to heat homes. Soot, smoke, and sulfur dioxide fill the air. The good old days? Not in the factory towns. But there were large rural areas unaffected by air pollution. With increasing population, the entire world is becoming more urban. It is the huge cities that are most affected by air pollution. But rural areas are not unaffected. In the neighborhoods around smoky factories, there is evidence of increased rates of spontaneous abortion and of poor wool quality in sheep, decreased egg production and a high death rate in chickens. Traffic police in Tokyo have to wear gas masks and take "oxygen breaks" --breathing occasionally from tanks of oxygen. Smog in Athena at times has forced factory closings and traffic restrictions. Acid rain in Canada is caused by air pollution in the United States, contributing to strained relationships between the two countries. Sydney, Rome, Tehran, Ankara, Mexico City, and most other major cities in the world have had frightening experiences of air pollution. One of the two major types of smog--consisting of smoke, fog, sulfur dioxide, sulfuring acid (H2SO4), ash and soot--is called London smog. Indeed, the word smog is thought to have originated in England in 1905 as a contraction of the words "smoke" and "fog." Probably the worst case of smog in history started in London... Question: What is the passage mainly talking about? - The type and form of pollution. - The cause and effect of pollution. - The situation and elimination of pollution. - The concept and examples of pollution.
The situation and elimination of pollution.

Read the following article and select the best answer. Article: The biggest challenge faced by travelers especially those who like to have a backpacking trip is how to ensure a steady supply of clean clothes. Now, thanks to a great invention called Scrubba Wash Pack, that worry may be a thing of the past. The portable washing machine was invented by Ash Newland in 2010, while planning to climb Mt. Kilimanjaro. Struck by the limited packing space, he got inspiration from traditional washboards to create a bag that could be used to clean clothes. Then he quitted his career as a lawyer and focused on perfecting the bag's design. By 2012, the bag was ready for the public. It weighed only 180 grams and required very little storage space, making it perfect for anyone wishing to travel light. Not surprisingly, the bag worth 55 dollars was an instant hit with travelers, university students and even passengers. However, Newland was not satisfied. He still saw a flaw with his invention - dirty clothes had to be carried around in a separate bag! The recently introduced Scrubba Wash Pack solves that problem. In order to make the pack active, dirty clothes are placed inside the bag along with two to three liters of water. The bag is then shut tightly to ensure all air is squeezed out and the clothes are massaged for a few minutes. After a quick wash, they are clean and ready to be dried. According to Newland, the pack can clean anything from jeans to smelly socks! What's even more amazing is that with a capacity to hold 13-liters of water, it can be used to wash more clothes at a time. The best part is that the 99-dollar pack that will be available for sale later this year, only weighs 300 grams and is completely foldable, making it easy to store when it's not in use. With the Scrubba Wash Pack, wandering through foreign cities searching for a washing shop, or paying for washing machines may soon be a thing of the past! Question: What is the passage mainly about? - Introducing a great new invention. - Explaining the development of backpack - Listing some common problems for travelers. - Comparing two kinds of washing machines.
Introducing a great new invention.

Q: Read the following article and select the best answer. Article: Do you know that a Mom deserves a special gift this year for Mother's Day? Sure, flowers can always brighten Mother's day and a dinner out is always appreciated. However, doesn't she deserve something more personal or something that lasts longer than an evening? I'm talking about the gift of fitness. Improved fitness is a gift that is invaluable to everyone. When you give a woman the gift of fitness, you are helping her open a door to better health. I can't think of a more thoughtful gift that shows the recipient how much you care about their well-being. By giving the gift of fitness you are providing them with unlimited health benefits. And, its a gift that you can truly feel proud to give. Of course, we all know that exercising can help people stay slim and fit. But, do you also know about all the other great benefits of exercising? Daily physical activity reduces stress and can help you sleep better. Fitness has been linked to reducing the risk of some diseases and to warding off depression. Researchers also believe that strength training can help prevent osteoporosis . Not to mention that exercising also improves self-esteem, increases energy and helps you be able to do continuous work for longer. All Moms would find these fitness benefits extremely invaluable. If they are like most of us, they have probably even mentioned how they would like to drop a few pounds or just get in better shape. In fact, experts say that about 62% of Americans are currently on a diet. By giving the gift of fitness you are helping provide your mom with extra motivation. She may be more motivated to actually get fit because she doesn't want to feel guilty about ignoring such a thoughtful gift . Question: According to this passage the gift of fitness will _ . - help moms to lose some more weight - encourage moms to do more exercise - keep moms having a healthy diet - make moms look even more beautiful
A: encourage moms to do more exercise

*Question*
Read the following article and select the best answer. Article: In China ,with the development of society, more and more people are annoyed at the continually rising house prices. They want to know who is to blame for it. Local governments,developers and speculators share a vested interest in it. People who are really in need of homes are most likely to suffer heavy losses. Many local governments depend on selling land to keep its normal operation. The higher land prices,the more money. Therefore,developers back the local governments by buying land at high prices. In return,the governments make favorable policies to help the developers. For example,drive all the possible home buyers to this nasty market. They even encourage large numbers of speculators to catch more people. Rising house prices have already become the fence which divides the Chinese society. It has caused widespread dissatisfaction. The government will lose the support of the common people if leaving house prices out of control. Besides,rising house prices will stop us building the new countryside as the present policy actually forbid people to flow freely from cities to the countryside. Collecting taxes on houses can fundamentally solve this problem. On one hand,it will discourage the speculators. On the other hand,it will offer a stable tax resource apart from reducing the sales cost of the developers. secondly,stop the developers selling the houses before completion. If so,the developers will certainly try their best to sell all their houses once completed. And this will also lower speculators' expectation of price rising,which will decrease speculations. Question: The only victims of rising house prices are _ . - governments - developers - real home buyers - speculators
**Answer**
real home buyers