I'm taking a test and have to guess the right answer to the question after the article. Article: Everyday rubbish could provide a valuable source of energy thanks to a clever new invention. Smelly methane gas expelled from landfill sites containing tones of rotting household waste could be used to produce a valuable energy resource. In Europe alone land fill tips produce 94 billion cubic meters of methane per year but currently only one percent of what could be a valuable source of energy is used, the rest is burnt off to prevent an explosive build up of gas. Methane gas forms when organic matter breaks down and is drawn off from large rubbish tips by pipes sunk into the middle of the waste. Until now this process wasn't possible on small sites because the pipe allowed oxygen to seep in and that stop the breakdown process. Viktor Popov of the Wessex Institute of Technology has now developed a system to modify existing landfill sites by making them airtight while the methane is extracted from sunken wells. The site is covered by a special three-layered skin whose two outer layers are made of clay with a pressurized layer of carbon dioxide gas in the middle. As the methane is sucked out through a central well it is replaced by carbon dioxide from the middle layer rather than oxygen, allowing the breakdown process to continue. Unfortunately there are no plans to use the power of methane even though Popov claims his invention could provide a valuable source of energy over the next 20 years. Question: Which of the following statement is NOT true according to the passage? Options: A: Oxygen can cause the breakdown process to stop. B: When the methane is sucked out, oxygen will enter from the middle layer. C: Carbon dioxide doesn't affect the breakdown process. D: The new invention has not been put into use.
B

I'm taking a test and have to guess the right answer to the question after the article. Article: Grasslands need time to rest when cattle and other animals feed on them. Moving animals from one area of pasture to another can provide the time needed for new growth. This is called rotational grazing . Rotational grazing is good for the land and the animals, and it can save money. This form of grazing can reduce the need for pesticide treatments by reducing the growth of weeds. And it can limit the need for chemical fertilizers by letting animal wastes do the job of natural fertilizer. Rotational grazing can even help prevent wildfires by keeping grasslands in good condition. Letting animals feed continually and intensively in the same grazing areas can require costly replanting. Animals eat the most desirable growth first. When that keeps happening, the roots do not have enough time to recover. As a result, less desirable plants may replace them. Intensively used grasslands are also harmed as the soil is continually crushed under the weight of heavy animals. While rotational grazing can save money over time, it also requires planning. And that starts with a good map to mark fences, water supplies and grazing areas. Changing methods of grazing also requires time. Farmers may want to put up electric fences to enclose grazing areas, called paddocks. The paddocks will need water. Some farmers design a path for animals from different paddocks to drink from a common watering place. Farmers can start rotational grazing by removing animals from a pasture when the grass is eaten to less that five centimeters. The pasture is then kept empty until the grass grows to more than fifteen centimeters high. Sheep and goats may require special preparations. They may need stronger fences than other animals. And while they eat the grass, they may need guard animals to protect them from animals that would like to eat them. Question: The function of putting up electric fences is to _ . Options: A: divide the pasture into paddocks B: encourage animals to get around C: stop animals staying at one place D: provide water supplies for animals
A

I'm taking a test and have to guess the right answer to the question after the article. Article: Would you believe that the first outstanding deaf teacher in America was a Frenchman? His name was Laurent Clerc. He became a friend of Thomas Hopkins Gallaudet and together they founded America's first school for the deaf. Laurent Clerc was born in a small village near Lyons, France, on December 26, 1785. When he was one year old, he fell into a fire, losing both his hearing and his sense of smell. At 12, Laurent entered the Royal Institution for the Deaf in Paris where he did well in his studies. After he graduated, the school asked him to stay on as an assistant teacher. Meanwhile, in America, Thomas Hopkins Gallaudet was studying to be a minister. He was very concerned about the lack of educational opportunities for the deaf. Therefore, in 1815, Gallaudet sailed to London, England to seek ideas on how to teach deaf people. While he was there, he met a French educator of the deaf who invited him to go to Paris to spend three months learning at the Royal Institution for the Deaf, the school where Laurent Clerc was teaching. Gallaudet accepted the offer. The two worked and studied well together. When the time came for Gallaudet to return, he asked Clerc to come with him. Clerc accepted on one condition: that he would stay in America only a short time. The two men set sail on June 18, 1816. The voyage across the Atlantic Ocean took 52 days; however, Clerc and Gallaudet put the time to good use. Clerc studied English, and Gallaudet studied sign language. They discussed the school for the deaf which they planned to open. On the long trip, they had many conversations about education and deafness. The year after they arrived, they founded a school for the deaf in Harford, Connecticut. At the school, Clerc led a busy life. He taught signs to Principal Gallaudet; he taught the pupils; and he taught hearing men who came to the school to study deaf education. In 1819, Clerc married Eliza Crocker Boardman, one of his pupils. They had six children. He retired from teaching in 1858. Although he had intended to return to... Question: The main idea of this passage could best be stated as _ . Options: A: Clerc managed his time well, and was able to teach a lot of information in a short period of time B: Thomas Gallaudet was grateful to Clerc for all that he taught him C: Clerc preferred teaching deaf students to hearing students D: Clerc, an educated Frenchman, had a great impact on American Deaf Education
D