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Read the following article and select the best answer. Article: One day, Daisy dreamed a strange dream. She flew in a wonderful carpet to talk with an antelope in Tibet. The antelope told her they were hunted because of their fur which can be used to make sweaters like hers. Later, she flew to Zimbabwe where she talked with an elephant and got to know the farmers there no longer hunted them. That's because the government decided to help and the farmers finally made a lot of money. At last, she arrived at the thick rainforest where a monkey told her "no rain forest, no animals and no drugs." Although finally everything was gone, she hadlearned so much. Question: Why the farmers in Zimbabwe no longer hunted elephants? - Because farmers knew the importance of wildlife protection. - Because elephants were endangered animals. - Because the government helped farmers to make money. - Because elephants and farmers lived in peace.
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Because the government helped farmers to make money.

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Read the following article and select the best answer. Article: Picture the scene: the battery on your mobile phone has run out. You can't make any calls for help and no one can contact you. You are all alone - well, not quite. Just reach into your pocket and take out a piece of sugar.Put it into the battery, wait a minute, and you're back on the phone. Thanks to a couple of American scientists, this situation could become real.Swadesh Chaudhuri and Derek Lovely have invented the "bacteria battery" - powered by bacteria that eats sugar and turns it into electricity. "This is a special organism," Lovely said."You ean harvest enough electricity to power a cell phone battery for about four days from a spoonful of sugar." In the past, bacteria batteries have been expensive and not long-lasting. But this battery uses more efficient bacteria that can turn 80 percent of sugar into electrical energy. This is 30 percent more than similar batteries can manage. The bacteria battery could become as small as a household battery. It's also cheap and stable, as sugar can be taken from waste and crops. But the sugar to electricity process is slow: it could take weeks for the bacteria to digest a cup of sugar.And it produces "greenhouse" gases which pollute the environment. The scientists understand there is a lot more work to be done. "It is still young," said Lovely."Where we are now is where solar power was 20 0r 30 years ago." But he believes the battery could be used in scientific equipment at the bottom of the ocean.Other ideas include using sugar in the blood to run medical devices in the human body, and taking sugar from animal waste to provide energy to power homes in rural areas. Question: This passage is mainly about _ . - how to change sugar into electricity - a scientific invention of a new kind of bacteria battery - a new way to reduce pollution caused by mobile phones - a new kind of mobile phones and its future
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a scientific invention of a new kind of bacteria battery

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Read the following article and select the best answer. Article: For thousands of years, people have been debating the meaning of happiness and how to find it. From the ancient Greeks and Romans to current day writers and professors, the debate about happiness continues. What makes someone happy? In what parts of the world are people the happiest? Why even study happiness? The Greek philosopher Aristotle said that a person's highest happiness comes from the use of his or her intelligence. Religious books such as the Koran and Bible discuss faith as a form of happiness. The British scientist Charles Darwin believed that all species were formed in a way so as to enjoy happiness. People throughout history may have had different ideas about happiness. But today, many people are still searching for its meaning. How do you study something like happiness? You could start with the World Database of Happiness at Erasmus University in prefix = st1 /Rotterdam, The Netherlands. This set of information includes how to define and measure happiness. Some findings are not surprising. For example, the database suggests that married people are happier than single people. People who like to be with other people are happier than unsocial people. But other findings are less expected: People with children are equally happy as couples without children. And wealthier people are only a little happier than poorer people. Positive psychology is the new term for a method of scientific study that tries to examine the things that make life worth living instead of life's problems. Traditional psychology generally studies negative situations like mental suffering and sickness. But positive psychology aims to study the strengths that allow people and communities to do well. There is also an increasing amount of medical research on the physical qualities of happiness. Doctors can now look at happiness at work in a person's brain using a method called magnetic resonance imaging , or MRI. For example, an MRI can show how one area of a person's brain activates when he or she is shown happy pictures. A... Question: As an approach of scientific study, positive psychology focuses on _ . - mental suffering - psychological sickness - examining what makes life worth living - strengths that enable people to succeed
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strengths that enable people to succeed