Read the following article and select the best answer. Article: Sadness is unpleasant, and in a society where personal happiness is prized above all else, there is little tolerance for falling in despair. Especially now we've got drugs for getting rid of sad feelings -- whether it's after losing a job, the break-up of a relationship or the death of a loved one. So it's no surprise that more and more people are taking them. But is _ really such a good idea? A growing number of voices from the world of mental health research are saying it isn't. They fear that the increasing tendency to treat normal sadness as a disease is playing fast and loose . Sadness, they argue, serves a useful purpose--and if we lose it, we lose out. Yet many psychiatrists insist not. Sadness has a nasty habit of turning into depression , they warn. Even when people are sad for good reason, they should take drugs to make themselves feel better. So who is right? Is sadness something we cannot live without or something horrible never to touch? There are lots of ideas about why feeling sad should become part of human life. It may be a self-protection strategy, as other primates also show signs of sadness. A losing monkey that doesn't show sadness after it loses a fight may be seen as continuing to challenge the winning monkey -- and that could result in death. In humans sadness has a further function: we may display sadness as a form of communication. By acting sad, we tell other community members that we need support. Then there is the idea that creativity is connected to dark moods. There are plenty of great artists, writers and musicians who have suffered from depression or disorder. Scientists found that people with signs of depression performed better at a creative task, and negative moods make people think deeply over the unhappy experience, which allows creative processes to come to the front. There is also evidence that too much happiness can be bad for your career. A doctor found that people who scored 8 out of 10 on a happiness test were more successful in income and education than 9s... Question: The author believes sadness is _ . - a good thing for people's health - something horrible never to touch - a necessary function of humans' - always to be treated as depression
a necessary function of humans'

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Read the following article and select the best answer. Article: Sharing not only exists between humanbeings.As is often seen that some plants and anima1s live close together, and they depend on each other. They are usually very different from their partner, and yet all live easier lives because of each other. It is nature's idea of sharing. An example of a partnership is the shark and pilot fish. The pilot fish is a little fish only about nine inches long. He would be. helpless if he hung around by himself in the mighty ocean. He makes up for his size with his smartness. He cleverly swims along beside the shark. When the shark eats, the pilot fish gets the leftovers. And the pilot fish needn't worry about his safety. The shark also gets benefits from this relationship. The pilot fish cleans food scraps and insects from the shark's hide. Another example of depending on each other is the sea anemone and striped clown fish. The sea anemone looks like a flower and has petals that contain poisonous stinging cells. When small fish swim into the petals, the anemone traps and paralyzes them. However,the striped clown fish is able to swim into the poisonous petals without being harmed. When he is in danger, he quickly swims into the sea anemone and is unable to be seen by his enemies. To pay for his safety,the clown fish brings food to the anemone. He also guides other fish into the anemone's deadly trap. Large mammals such as the ox, antelope, rhinoceroses and African buffalo form such a relationship with the red-billed ox-peeker. They provide daily meals for the bird. In fact the bird eats insects. The various large mammals act as a restaurant with a varied menu for the ox-peeker. What do they get in return from the bird? Free beauty treatments! Some plants live together in a beneficial relationship of symbiosis. The fungus does not have chlorophyll that plants need to make food. However, green algae does contain chlorophyll. It is, therefore, able to feed the fungus along with itself. But nothing is free! The fungus repays it by protecting the algae. Since it takes... Question: The author wrote this passage mainly to _ . - prove that all animals survive by depending on each other - tell us that sharing exists everywhere in the world - show us the mutual relationship between sea life - give us some examples of sharing among plants and animals
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give us some examples of sharing among plants and animals

Read the following article and select the best answer. Article: Jamie Wardley is a special kind of artist - an ice sculptor. He first trained as a sand sculptor. Later, he learned about ice sculpture. Now he does sand sculpture in the summer. And in the winter, he sculpts ice. When sculpting ice, Wardley has to work in cold temperatures. If the weather is cold enough, he can work outside. But winter in the United Kingdom is not always very cold. So often he works in a large freezer where the temperature is about -12degC. Wardley enjoys sculpting ice outside in the winter. When he sculpts in the open air, people can watch. They can be part of the creative process. Wardley makes ice sculpting sound simple. But the tools Wardley uses are sharp and dangerous. And the ice is very heavy. Each block of ice weighs 120 kilos. And some larger sculptures are made from several combined blocks of ice. Sometimes ice sculptures can be as big as buildings. In Kemi, Finland there is an ice hotel called the Snow Castle. Each year, Wardley helps build the Snow Castle. Inside the Snow Castle, the temperature is -50C. Even the dining tables are made of ice. So you have to wear winter clothes when eating and wear a hat when sleeping. "The ice hotel is built every year in January. Then it melts in April. Each year we rebuild it and create a new design," Wardley said. The Snow Castle is a large and amazing work of ice, but Wardley's smaller ice sculptures are special too. One winter, in the city of Bradford, UK, Wardley created several small sculptures. He used the sculptures to tell a story which contained an important message about good will and understanding. Ice sculptures are temporary works of art. When the temperature rises, they will melt. But that does not mean that their beauty is lost. The sculptures from that day in Bradford have now melted away, but their message of good will, understanding, and acceptance remains. Question: According to the text, Wardley _ . - loves sand sculpture more than ice sculpture - sculpts ice in a large freezer in the summer - worked as an ice sculptor in the beginning - enjoys carving ice outdoors in the winter
enjoys carving ice outdoors in the winter