Q: I'm taking a test and have to guess the right answer to the question after the article. Article: The African elephant, the largest land animal remaining on the earth, is of great importance to African ecosystem . Unlike other animals, the African elephant is to a great extent the builder of its environment. As a big plant-eater, it largely shapes the forest-and-savanna surroundings in which it lives, therefore _ of existence for millions of other animals that live in its habitat. It is the elephant's great desire for food that makes it a disturber of the environment and an important builder of its habitat. In its continuous search for the 300 pounds of plants it must have every day, it kills small trees and underbushes, and pulls branches off big trees. This results in numerous open spaces in both deep tropical forests and in the woodlands that cover part of the African savannas . In these open spaces are numerous plants in various stages of growth that attract a variety of other plant-eaters. Take the rain forests for example. In their natural state, the spreading branches overhead shut out sunlight and prevent the growth of plants on the forest floor. By pulling down trees and eating plants, elephants make open spaces, allowing new plants to grow on the forest floor. In such situations, the forests become suitable for large hoofed plant-eaters to move around and for small plant-eaters to get their food as well. What worries scientists now is that the African elephant has become an endangered species. If the elephant disappears, scientists say, many other animals will also disappear from vast areas of forest and savanna, greatly changing and worsening the whole ecosystem. Question: According to the passage, which of the following statements is TRUE? Options: A: The African elephant is the largest animal on the earth. B: African elephants have 300 pounds of plants every day, including small trees and underbushes. C: The African elephant is in a way the builder of the environment like other land animals. D: If the African elephant disappears, the whole ecosystem won't be affected.
A: B

Q: I'm taking a test and have to guess the right answer to the question after the article. Article: This booklet is designed to help you and your family plan for and survive a major earthquake. By taking action to be prepared, you can lessen the impact of an earthquake on your family. Set aside some emergency supplies, and teach your family what to do at home during and after a disaster. You could be without help for up to 72 hours, so learn to cope for at least that long. Movement of the ground is seldom the actual cause of death or injury. Most casualties result from partial building collapse and falling objects and debris, like toppling chimneys, falling bricks, ceiling plaster, and light fixtures. Many of these conditions are easily preventable. Because earthquakes occur without warning, it's important to take steps now to prepare, so that you know what you can do and how to respond--constructive, protective action is possible. Have on hand for Any Emergency- Ideas for Home, Workplace, and Car. Because you don't know where you will be when an earthquake occurs, prepare disaster supplies. Question: Who is the passage mainly written for? Options: A: scientists B: parents C: the public D: teachers
A: C

Q: I'm taking a test and have to guess the right answer to the question after the article. Article: FOR most people, life without plants is unimaginable. They feed us, clean up our air and brighten up our gardens. But what if someone told you that even our smartphones can benefit from plants? Meet the scientists from the Freiburg University of Mining and Technology in Germany. According to reports from Reuters, they have come up with a way to take the important element germanium from plants. The element was first discovered in Germany (hence the name) and was used to develop the first transistor because it can transport electricity very quickly. Nowadays, silicon-germanium alloy plays an important role in making computers, smartphones and fiber-optic cables . Although germanium can be found in soil around the world, it is difficult to extract . In the traditional process, people take the material after zinc mining or burning coal. But the Freiburg scientists decided to fall back on the natural world. Biology professor Hermann Heilmeier is one of the scientists who are using common plants for this uncommon process. "Different energy crops are being planted, for example, sunflowers, corn ... we want to use them for phytomining. In German we call it 'mining with plants'." Others have used this method in the past with metals like gold and copper . But in their study, the Freiburg scientists brought germanium from the soil into the roots and shoots of the plants, harvested them and then took the element from the plants. The process did not cost too much because germanium can be taken after plants are processed for use as biogas . So many of the costs are already covered in existing biogas plants. However, there is still a lot of work to do before we can all experience the benefits. At the moment germanium can only be harvested in very small amounts, just a few milligrams per liter. Now scientists are working on different plants to improve this. "As is so often the case, industry is still waiting because they want to see everything already working. Then they say, 'We'll have it.' But of course we have... Question: Which of the following statements would Professor Martin Bertau agree with? Options: A: Many businesses have already started contributing money to this research. B: Industry and science have stronger and closer connections than is generally expected. C: People from related industries showed no interest in extracting germanium from plants. D: Germanium has to be extracted from plants in large quantities before this type of extraction becomes industrialized.
A: D

Q: I'm taking a test and have to guess the right answer to the question after the article. Article: Our environment isn't as green and beautiful as it should be. There are steel monsters blocking out the sun, blowing out dangerous smoke, and letting out poisonous chemicals into rivers, cars producing harmful waste gas, people throwing out waste in a wrong way and all other kinds of sources that ruin the planet. Facing current environmental problems, people need to do their best to save the Earth. You can see many big garbage dustbins in the streets. They're not there for a show, but for you to drop your waste. We should realize that what a little we do does count. So next time you get that urge to throw gum or a chocolate package out of the car window, or " accidentally" drop as you walk down the street, ask yourself how much waste you've been contributing to the environment with that bad habit going on for years. At home, the first thing we can do to protect the environment is avoid letting water run continuously and make sure that taps are not leaky ,which would help greatly in _ Another is to use energy-saving lights, and turn them off before you leave the rooms. It's not only energy-saving, but also cuts down electricity costs. Recycling is a method to make items reusable. Many things you want to throw out can be made into new products through the reproducing process. Use your imagination to come up with ways on things that you can use again. Pass the message of simple ways to save the environment on to kids. Starting with kids is a good way of teaching the message early in their lives, in the hope that they can carry it forward as they grow older. With environmental protection awareness in mind, we can do what we can, for the results are to have a big effect on the planet. As long as we do our part, the world is one small step closer to being saved. Question: Which of the following isn't true? Options: A: The more people do their part, the greener the environment will be. B: Selling what you don't want any more is a kind of recycling. C: To protect the environment may help you save some money. D: Your bad habits for the environment are a valuable contribution.
A: D