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Read the following article and select the best answer. Article: The production of coffee beans is a huge, profitable business, but, unfortunately, full-sun production is taking over the industry and bringing about a lot of damage. The change in how coffee is grown from shade-grown production to full-sun production endangers the very existence of, certain animals and birds, and even disturbs the world's ecological balance. On a local level, the damage of the forest required by full-sun fields affects the area's birds and animals. The shade of the forest trees provides a home for birds and other special that depend on the trees' flowers and fruits. Full-sun coffee growers destroy this forest home. As a result, many special are quickly dying out. On a more global level, the destruction of the rainforest for full-sun coffee fields also threatens human life. Medical research often makes use of the forests' plant and animal life, and the destruction of such species could prevent researchers from finding cures for certain diseases. In addition, new coffee-growing techniques are poisoning the water locally, and eventually the world's groundwater. Both locally and globally, the continued spread of full-sun coffee plantations could mean the destruction of the rainforest ecology. The loss of shade trees is already causing a slight change in the world's climate, and studies show that loss of oxygen-giving trees also leads to air pollution and global warming. Moreover, the new growing techniques are contributing to acidic soil conditions. It is obvious that the way much coffee is grown affects many aspects many aspects of life, from the local environment to the global ecology. But consumers do have a choice. They can purchase shade-grown coffee whenever possible, although at a higher cost. The future health of the planet and mankind is surely worth more than an inexpensive cup of coffee. Question: The purpose of the text is to _ . - entertain - advertise - instruct - persuade
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persuade

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Read the following article and select the best answer. Article: "Oh,you must have been a spoiled kid.You must be really bossy.I wonder what you're going to be like to deal with?" That's often the response Angela Hult gets when people find out she's an only child,she told ABC News.Despite such negative remarks,Hult has decided to have only one child herself.And she's not alone. According to the US' Office for National Statistics,women approaching the end of their childbearing years had an average of 1.9 children in 2004,compared with 3.1 for their counterparts in 1976.The percentage of onechild families in Britain had risen from 18 percent in 1972 to 26 percent in 2007. But even though only children are becoming increasingly common,the traditional view that they're selfish,spoiled and lack social skills holds strong.Even parents of only children,like Hult,are made to feel guilty about having only one child.Worried that they're being selfish and endangering their child's future,they flock to online discussion forums seeking advice.Soon,however,they ask themselves:is this social prejudice really reasonable? "There have been hundreds and hundreds of research studies that show that only children are no different from their peers ," Susan Newman,a social psychologist at Rutgers University in the US,told ABC News. This raises another question:why are only children still viewed with such suspicion? "There is a belief that's been around probably since humans first existed that to have just one child is somehow dangerous,both for you and for the continuation of your race," Toni Falbo,a professor of educational psychology,told the Guardian."In the past a lot of children died.You'd have had to be crazy to only have one." Times,of course,have changed and infant mortality has largely reduced.So what do only children themselves say? Kayley Kravitz,a blogger for The Huffington Post,grew up as an only child and highly recommends the experience."Being an only child taught me the most valuable skill of all:the ability to be alone," she said. Question: What's the author's attitude towards having only one child? - Neutral. - Negative. - Positive. - Doubtful.
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Neutral.

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Read the following article and select the best answer. Article: Eating a diet high in processed food increases the risk of depression , research suggests. What's more, people who ate plenty of vegetables, fruit and fish actually had a lower risk of depression, the University College London team found. Data on diet among 3,500 middle-aged civil servants were compared with their emotional state five years later, a British journal reported. They split the participants into two types of diet--those who ate a diet largely based on whole food,which includes lots of fruit, vegetables and fish,and those who ate a mainly processed food diet, such as sweetened desserts, fried food, processed meat,refined grains and high fat dairy products After accounting for factors such as gender, age, education, physical activity, smoking habits and chronic diseases, they found a significant difference in the future depression risk with the different diets. Those who ate the most wholefood had a 26% lower risk of future depression than those who ate the least wholefood. By contrast, people with a diet high in processed food had a 58% higher risk of depression than those who ate a diet low in processed foods. Study author Dr. Archana Singh Manoux pointed out there was a chance that the finding could be explained by lifestyle factor they had not accounted for. He also pointed in a paper that a Mediterranean diet was associated with a lower risk of depression, but the problem with that is if you live in Britain, the likelihood of you eating a Mediterranean diet is not very high. Dr.Andrew McCulloeh, chief executive of the Mental Health Foundation, said, this study adds to an existing body of solid research that shows the strong links between what we eat and our mental health. He added people's diets were becoming increasingly unhealthy. The UK population is consuming less nutritious, fresh produce and more saturated fats and sugars. Question: Why might the author have written this text? - To tell people what a healthy diet actually is. - To prove people's diets are increasingly unhealthy. - To encourage people to cut down on processed food. - To introduce some experts on the research team.
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To encourage people to cut down on processed food.