Read the article and select the best answer. Article: The United States Department of Agriculture has a program called Wildlife Services. Its job is to help protect agricultural and other resources from threats and damage by wildlife. Often that means helping farmers deal with unwelcome visitors. This organization has experts from different fields and it has set up thousands of inquiry agencies all over the country where farmers can explain their difficulty and get practical help. ks5u One example from Wildlife Services of its work involved a farmer in Washington State, in the Pacific Northwest. Several years ago, thousands of Canada geese landed on his fields. The geese began to eat his carrot crop. Biologists from the program suggested that the farmer use noise-making devices and other measures to scare the large birds away. These efforts apparently succeeded, which made the farmer quite happy. Wildlife Services also has a livestock protection program. The program just offers suggestions to keep those _ away instead of killing them. The Wildlife Services program is part of the Animal and Plant Health Inspection Service, or APHIS. APHIS offers some suggestions of ways to keep away predators .For example, try to keep food and water safe from wildlife. Fences may help keep out coyotes , especially if the fences are at least two meters high. For best results, the bottom of the fence should extend about fifteen centimeters into the ground. Experts suggest providing secure shelter for chickens, sheep and other animals that could be attacked. The experts also suggest using lights above places where animals are kept. And they advise people who see coyotes around their property to chase them away by shouting, making loud noises or throwing rocks. For home gardeners, a two-meter fence might help keep out deer. To keep out rabbits, a wire fence has to be only about a half-meter high. It should extend fifteen centimeters underground to keep rabbits from digging under it. If snakes are a problem, remove dead trees and cut high grass to destroy their hiding places. And... Question: The bottom of the fence should extend about 15 centimeters into the ground because _ . Options: A: coyotes can climb over it easily B: the strong wind might blow it away C: snakes can cross it from under the ground D: rabbits may enter by digging holes under it
D

Read the article and select the best answer. Article: Forget chip fat, sugar cane or rapeseed oil -- the latest source of biofuel could be watermelons. Scientists have discovered that the fruit is a great source of sugar that can be readily distilled into alcohol to power cars and farm machinery. And sellers reject 360,000 tons of "substandard" fruit every year in America alone which could be used as an economical way to make fuel. The waste from US growers could produce nearly two million gallons (nine million litres) of biofuel per year. In the study, researchers at the United States Department of Agriculture set out to determine the biofuel potential of juice from rejected watermelons --those not sold due to imperfections, and currently ploughed back into the field. About a fifth of each yearly watermelon crop is left in the field because of surface blemishes or because they are misshapen. Dr. Wayne Fish, who led the team, found that 50 percent of the fruit was fermentable into alcohol which could provide valuable fuel. "We've shown that the juice of these watermelons is a source of readily fermentable sugars, representing an unexploited raw material for alcohol biofuel production," he said. The study, published in the journal Biotechnology for Biofuels, discovered that watermelons could produce around 20 gallons of fuel per acre from fruit that otherwise would go to waste. Production of biofuels has been targeted by Western governments as a way to support renewable energy targets. The European Union has a target for 2010 that 5.75 percent of transport fuels should come from biological sources, but the target is unlikely to be met. The British government's Renewable Transport Fuel Obligation requires five percent of the fuel sold at the pump by 2010 to be biofuel. Question: It can be learned from the text that _ . Options: A: about two gallons of fuel could be made from rejected fruit per acre B: sellers in the world throw away 360,000 tons of watermelons every year C: half of the watermelons were fermentable into alcohol to provide energy D: five percent of fuel is required to be biofuel from watermelons by 2010 in Britain
C

*Question*
Read the article and select the best answer. Article: What is funny? The short answer is: Who knows? The joke that causes a burst of laughter from one listener might be met with a puzzled look from another. In general, you should avoid jokes at any business or social gathering where there are more than two people in your conversational group. If there are only two people -- and they consist of you and your best friend -- go ahead and tell it. Admittedly, a few people possess a perfect sense of timing, appropriateness, and joke delivery. You are probably not one of them. You might be quite funny and have many great jokes. But there's a place for jokes -- over dinner with family, hiking with friends, but business or social affairs with colleagues and acquaintances are not it. It takes a whole other level of joke-telling ability to put a joke into the more formal conversations. The best jokes come into the conversation so that by the time listeners realize a joke is in progress, the punchline that produces humour is being delivered -- to their surprise and delight. Jokes don't translate well when you're in a group with mixed backgrounds: those whose first language is not English, those who might not understand a special term or an "in" expression, young people who wouldn't catch a reference to some bit of culture familiar to older people -- and vice versa . Never joke about another person in the group -- about their name, habits, hometown, profession, appearance, or past. It's not a question of whether the joke is cheery or appropriate. No one enjoys being singled out this way. When you are the subject of the joke, the laughter doesn't feel good no matter how hard you try to tell yourself they're not laughing at you. Because that's what it feels like. What do you say if you realize your joke upset someone? Apologize as briefly and as sincerely as you can, and hope that someone changes the subject. Try saying: "I'm sorry. I should have known better" or "I'm sorry. I wasn't thinking." What do you do if people don't get your joke or don't appear to find it as funny... Question: Which of the following best describes the writer's opinion on joke-telling? Options: A: Nobody knows what makes a joke funny. B: We should not tell jokes unless we are asked to do so. C: Joke-telling is a very complex thing. D: Jokes should be told only to friends and family members.
**Answer**
C