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Read the following article and select the best answer. Article: People have always wanted to speak with animals. There are many books about this, especially children books. Now there are also movies, such as Dr. Doolittle. When you watch animals, it seems clear that they can communicate with each other. Many people wonder why people can't also communicate with them. Scientists know how some animals communicate. Bees, for example, use their bodies. They do a kind of dance to give information about food. Birds, on the other hand, share information with sounds. They use certain sounds to protect their homes and to stay together when they fly. Some male birds use lovely songs to attract a female . Other animals communicate with both body movements and sounds. For example, dogs wag their tails when they are happy, and they bark when they are excited. People used to think it was possible to teach human language to animals. Parrots and other birds, for example, can learn to say words. But the birds just repeat the words. They don't understand them. Some American scientists tried to teach English to chimpanzees , close s of human beings. However, this was impossible. Chimpanzees can't move their mouths the right way. They could never learn to speak like people. Then scientists tried to teach human language to chimpanzees in other ways. Some tried with American Sign Language (ASL). Others tried with a simple computer. But chimpanzees could only learn to use a few words. They could never learn to use grammar. Their brains are very different from the brains of human beings. Now some scientists are studying the same points between human and animal language. In fact, some animals use sounds like people do. Dogs, for example, use an unpleasant, low sound to tell other dogs to stay away. People, too, use that kind of voice to say the same things. A dog's noisy bark communicate that something is happening. People use the same high tone when they shout, "Watch out!" Scientists want to understand the language of other animals, such as whales and bears. To do this, they go... Question: Bees do a kind of dance to _ . - tell other bees where food is - attract other bees - show they are happy - play with other bees
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tell other bees where food is

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Read the following article and select the best answer. Article: I used to think of myself as a person learned in books, but my bookshelves told a different story. Apart from a few Indian novels and an Australian book, my literature collection only consisted of British and American titles. Worse still, I couldn't ever found anything in translation. My reading was limited to stories by English-speaking authors. So, at the start of 2012, I set myself the challenge of trying to read a book from every country in a year to find out what I was missing. With no idea where to get those books, I was unlikely to find publications from nearly 200 nations on the shelves of my local bookshop, so I decided to ask the readers all over the world for help. I created a blog called A Year of Reading the World and put out an appeal for suggestions of titles that I could read in English. The response was amazing. People all over the world were getting in touch with me, offering ideas and book lists. Some posted me books from their home countries. In addition, several writers, like Turkmenistan's Ak Welsapar and Panama's Juan David Morgan, sent me unpublished translations of their novels, giving me a rare opportunity to read works unavailable in Britain. Even with such an extraordinary team of bibliophiles behind me, however, sourcing books was no easy task. With translations making up only around 4.5 per cent of literary works published in the UK, getting English versions of stories was tricky. One by one, the books from the countries on the list filled my heart with laughter, love, anger, hope and fear. Lands that had once seemed exotic and remote became close and familiar to me. At its best, I learned, reading makes the world real. Question: It was not easy to find the books mainly because _ . - the readers were unwilling to offer help - there were too few translations in the UK - the author had no time and no chance to do it - the writers didn't want to publish their books
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there were too few translations in the UK

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Read the following article and select the best answer. Article: As in the field of space travel, new technologies continue to appear in undersea exploration. They share a number of similarities with each other -- as well as some important differences. Manned submersibles , like spaceships, must maintain living conditions in an unnatural environment. While a spaceship must simply be sealed against the vacuum space, a submersible must be able to bear extreme pressure if it is not to break up in deep water. In exploring space, unmanned vehicles were employed before astronauts. In undersea exploration, on the other hand, men paved the way, and only recently have unmanned remote-operated vehicles (ROVs) been put to use. One reason for this is that communicating with vehicles in orbit is much easier than talking to those underwater. A vacuum is an ideal medium for radio communications, but underwater communications are limited to much slower sound waves. Thus, most undersea vehicles -- particularly ROVs -- operate at the end of long ropes. For a similar reason, knowing where you are undersea is much more difficult than in space. A spaceship's position can be located by following its radio signal, or by using telescopes and radar. For an undersea vehicle, however, a special network of sonar devices must be laid out in advance on the ocean floor in the area of a dive to locate the vehicle's position. Though undersea exploration is more challenging than outer space in a number of respects, it has a distinct advantage: going to the ocean depths doesn't require the power necessary to escape Earth's gravity. Thus, it remains far less expensive. Question: What can we infer from the passage? - Submersibles usually break up in deep water. - Undersea vehicles can receive signals immediately. - Going to space needs power to escape the gravity. - Radio communications are quite difficult in a vacuum.
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Going to space needs power to escape the gravity.