Read the following article and select the best answer. Article: The largest outbreak of the deadly disease Ebola was caused by an infected bat biting a toddler, say a group of international researchers. The 17-strong team of European and African tropical disease researchers, ecologists and anthropologists have spent three weeks investigating the outbreak of the disease in Guinea, Liberia, Ivory Coast and Nigeria. The researchers captured the bats and other creatures near the village of Meliandoua in remote eastern Guinea, where the disease began in December 2013. The boy was bitten and passed the infection on to his mother and both died within a week. The disease was then spread far and wide by the people who came to the funeral. Most of the previous outbreaks have been caused by meat from dead infected animals collected by hunters who then sell it on. Fruit bats, however, are widely eaten in rural West Africa. The team, led by epidemiologist Herr Leendertz, a disease ecologist at the Robert Koch Institute in Berlin, are expected to publish their results in a major journal soon. Herr Leendertz's team believe that an infected straw-colored fruit bat brought the disease to Guinea. The mammals are known to travel long distances and usually settle in forests near cities. Herr Leendertz said, " The evidence is not 100 percent and we can only say that it is possible. They can travel far in one night. I don't think an individual bat or colony migrated all the way from Congo or Gabon to West Africa. These big colonies are connected. There is a possibility for the virus to mix between colonies. The bats share the same fruit. It is likely not to have even been one species of bat. The virus may jump from one species to another." If the bat theory is confirmed, the locals would try to destroy the colonies, which, Herr Leendertz says, would be an ecological disaster, because bats pollinate plants and kill insects. And bat hunts would also only increase human contact with potentially infected animals. Question: If the bat theory is confirmed, _ . - the disease Ebola will be controlled - all the fruit bats in Africa would be killed - plants would not be pollinated in the future - the ecosystem in Africa might lose its balance
the ecosystem in Africa might lose its balance

Read the following article and select the best answer. Article: Read the following interview with Dr John Bass, an international shark specialist who has spent many years studying sharks: First of all, doctor, are all sharks dangerous? No, they aren't. There are about 250 different kinds of sharks, but fewer than 30 of them are dangerous to humans. Certain sharks are very aggressive and we should fear them, but the danger of shark attacks is much lower than most people think. So which sharks are dangerous? The Great White shark is the most dangerous. Then there is the Tiger shark, which other sharks are afraid of, and the Blue shark. Both of them are very fast and dangerous. Which are the biggest and smallest sharks? The Whale shark is the biggest shark in the world. It grows up to 15 m in length and weighs as much as six large cars. The smallest shark, which is found near prefix = st1 /Japan, could fit into the palm of your hand because it is only 15-20 cm long. Do all sharks have teeth ? Yes, they do. Most sharks have hundreds, sometimes even thousands, of sharp teeth. These are arranged in rows of four or more. They fit quite loosely in the jaw. When the front ones break off or fall out, spare teeth move forwards from the rows behind: Sharks get a new set of teeth every two weeks. In 10 years, a Tiger may lose as many as 24,000 teeth! That's lots of teeth! What kind of food do sharks eat? Most sharks feed on small fish, and they keep the oceans healthy by eating sick and injured fish. However, hungry sharks will eat almost anything, including smaller sharks and even rubbish. Inside one Tiger shark which was found, there was a tin can, a bicycle tyre , a leather wallet and an alarm clock! And how do sharks find their food, doctor? A shark's sense of smell is excellent. It will follow the smell of blood across thousands of metres of ocean. They also see well, and they have good hearing. Sharks can feel movement in water very easily too, and it is possible for them to feel a fish moving as far as 30 m away. Question: Most types of sharks are _ . - dangerous killers - not dangerous - afraid of people - found inJapan
not dangerous

Q: Read the following article and select the best answer. Article: Until late April, northern China had experienced eight severe sandstorms this year alone, worsening the air quality in half the region's cities. This year's sandstorms are considered more severe than before. Not only are they increasing in frequency and having more serious effects on air quality, but they are also occurring earlier in the season and affecting a wider area. The timing of the first sandstorm moved up by a week this year, and the sandstorm-affected area has extended beyond 3 million square kilometers. The reason for the frequent dust storms is worsening desertification in China's northern areas, caused by a combination of warm, dry weather and the rapid spread of agriculture. The dust-affected area is likely to expand to the northeast in the near future as a large area of grassland in Inner Mongolia's northern plain turns rapidly to desert. Due to its lack of rainfall and overall surface dryness in the spring, Beijing experiences sandstorms every March and April. The most recent sandstorm hit the capital on April 17 and was the worst in five years. For about 40 days every year, the pollutants cannot be diffused, as the city's location makes it a natural container for accumulating sand and dust. Rapid urban development is affecting Beijing's air quality as well. To _ the dust from hundreds of new construction sites, authorities have issued rules asking builders to cover all working areas, pack down loose dirt, and wash vehicle tires when leaving the sites. Question: Beijing will experience sandstorms every March and April mainly because of _ . - the dry weather - its location - worse air - rapid urban development.
A: the dry weather

(Q).
Read the following article and select the best answer. Article: Are you a working professional with a continuing need for a stockpile of suits? Regardless of what specific wardrobe needs you have or where you like to shop,you really can avoid paying top dollars for clothing.These tips can help you experience the excitement of beating the system. Figure out precisely when to hunt for bargains. Your favorite stores will have several big sales throughout the course of the year.With a simple plan, you can time things so you shop only during the best, sales.If you don't feel like reading the ads in your local newspaper, call the stores directly and ask for details. Be a wise Internet shopper. Visit the Web sites of your favorite stores and clothing lists and look for online-only, sales.It's not at all uncommon to notice dresses or suits that used to cost $100 in final clearance sections for $19.99 or even $9.99.You can try clothes on at your nearest retail store first to make sure they fit and then buy them online for less. Really go thrift . Shopping at thrift stores takes patience and time,so you shouldn't go when you're in a big hurry.Many thrift stores offer regular weekly deals that provide true shopping thrills for you.For example,all clothes labeled stickers of a certain color1 may cost 99 cents on a certain day of the week.Call up the thrift stores in your area and ask about special sales. Don't give up clothes you have too easily. Many ignored items in your closet could enjoy a new life with a little bit of TLC.Coats call be relined ,shoes can be resoled and small imperfections can be repaired. Question: If you want to make a saving, which of the following should you NOT do? - Be patient when shopping. - Visit thrift stores regularly. - Buy things quickly. - Call up the thrift stores for details.
(A).
Buy things quickly.