Problem: OPTIONS:
- There are fewer wildfires
- There are more fires today
- The weather becomes warmer and drier
- Trees and grass become thinner
Q: Read the following article and answer the question. Article: Today there are more fires than in the past . Over 100,000 wildfires burn each year in America . Russia has 20,000 to 35,000 wildfires and Australia has about 60,000 each year. These fires destroy huge areas of forests and burn hundreds of homes . Many experts believe there are several reasons for this sudden increase in fires. The first reason is climate change . In 2010, Russia had the hottest and driest summer with strong winds in a century. In just one month, 500 fires destroyed over 2,000 homes. Some people lost their lives . Traditional fire-fighting practices are another reason for the increase in fires. In America, firefighters used to quickly put out every fire as quickly as they could. They didn't allow the grass and trees to burn. As a result , today many forests have thicker vegetation which provides more fuel for fires . So surprisingly, America has many more fires today partly because of its past fire-fighting practices. Scientists now understand that a fire can be a natural part of a healthy forest. As a result, countries like Australia allow some fires to burn naturally. The fire makes old trees thinner. This allows sunlight to reach the ground. As a result, fires help new trees to grow. Therefore , if a fire is not a serious threat to people , firefighters may let it burn naturally . Question: _ because of the traditional fire-fighting practices in the USA . Answer:
Answer: There are more fires today
Problem: OPTIONS:
- 260 kilometers
- 65 kilometers
- 450 kilometers
- 130 kilometers
Q: Read the following article and answer the question. Article: A kind of little cars may be seen in the streets in the future. People will like this kind of small cars better than the big ones. The car is as small as a bike. But it can carry two people in it. Everybody can drive it easily, just like riding a bike. Even children and old people can drive them to schools or parks. If everyone drives such cars in the future, there will be less pollution in the air. There will be more space for all the cars in cities, and there will also be more space for people to walk in the streets. The little cars of the future will cost less money to buy and to drive. These little cars can go only 65 kilometers an hour, so driving will be safer. The cars of the future will be fine for going around the city, but they will not be useful for a long trip. This kind of cars can save a lot of gas. They will go 450 kilometers, then they have to stop for more gas. They are nice cars, aren't they? Question: If you drive this kind of little cars for four hours, you can probably go _ at most. Answer:
Answer: 260 kilometers
Problem: OPTIONS:
- turns salt water into fresh
- can be built everywhere
- can make much fresh water at a time
- doesn't need sunshine every day
Q: Read the following article and answer the question. Article: Many places in the world need more fresh water. Every country is trying to find ways to turn salt water into fresh. Why aren't there many factories like the Symi factory? In some places the sun is not hot enough. Or it does not shine every day. In such places other ways of heating sea water can be used. These ways cost more money, but they work faster than the sun. By boiling sea water with high heat a lot of fresh water can be made quickly. But heating is not the only way to get fresh water from salt water. Other ways are tried. One way is freezing. The fresh part of salt water freezes first. To get fresh water, the bits of ice are taken out. Which way is the best? The one that gives the most water for the least money. It may be a different way for each place. Symi's way seems very good for small, hot places. It does not make much water at a time. But the factory is easy to build and costs little. That is why people in many dry places talk about Symi. Question: The Symi factory _ . Answer:
Answer:
turns salt water into fresh