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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions       A recent study suggests that teens' relationship with parents, friends and teachers may have a lot to do with why they don't get a good night's sleep.       David Maume, a sociologist and sleep researcher, analyzed federal health data, which interviewed 974 teenagers when they were 12, and then again at 15. He found that family dynamics have much to do with how well kids sleep. Teens, who had warm relations with their parents and felt like they could talk to them or their parents were supportive of them, tended to sleep better. However, families that were going through a divorce or a remarriage tended to affect teens' sleep.       And problems at school also affected teens' sleep. Feeling safe at school and having good relations with teachers tended to promote better sleep. As did good relationships with friends. Kids who took part in sports or other positive social activities or shared similar academic goals with their friends were also more likely to get a good night's sleep.       These add up to what makes lots of sense: a general feeling of well-being helps teens sleep. If we're happy and contented, we're much more likely to sleep better than if we're sad and anxious. Now, of course, teens can hardly resist being drawn to their computers and social networking. Maume also found that when parents were strict not only about bedtime, but also about limiting technology, kids slept better. It's a finding that seems obvious, but parents really do matter when it comes to health habits of their teenagers. Clearly, teenagers aren't getting 9 to 10 hours a night, which puts them at risk for all the consequences of lack of sleep, including poor academic performance, colds and stress. What is the passage mainly about? 

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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 31to 35.             A report from the United Nations given at the conference unveils how worrying the pollution caused by plastic utensils, especially plastic bags, is becoming. In a single minute, the world consumes one million plastic bottles; in a year, the world consumes five billion single-use plastic bags, according to Vietnamplus. The scary fact is that such plastic bottles and bags are not properly treated, as each year, the world discharges 300 million tons of plastic waste, accounting for some 10% of all solid waste, putting the environment and human health under tenterhooks, according to the news site. The conference also drew attention to another fact: “For a plastic bag that can be used for five minutes, it takes five seconds to produce, one second to discard, but 500 to 1,000 years to become totally decomposed,” says Vietnamplus. In another message given by the UN General Secretary and delivered at the conference, it is reported that since more than eight million tons of plastic bags end up in the oceans each year, “microplastics in the seas now outnumber stars in our galaxy.” “If present trends continue, by 2050 our oceans will have more plastic than fish,” Dan Tri reports, quoting Caitlin Wiesen, country director of the UN Development Programme in Vietnam. These above-mentioned fearful facts, however, are not merely global issues, but domestic problems as well, according to local media. Many local news outlets, when relating data from the conference, point out that white pollution – a term used to indicate the overwhelming discharge of plastic bags into the environment – is even getting worse in Vietnam than elsewhere. (Source: https://english.thesaigontimes.vn) Which of the following could be the main idea of the passage?

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Read the passage and answer the questions.Hello everyone! My name is Lucy and this is my beloved grandfather! His name is Tim and he is my best friend. My grandfather is sixty-four years old and he is retired now, so he has plenty of time to be and play with me. I love him very much and I know he loves me too. We usually spend a lot of time together.He is a widow and he lives with me, my father, my mother and my brother Kevin. We live in a big house in Fort Collins, Colorado. My grandfather is a very tall and strong mard. Can you see me on his shoulders in this picture? He is really strong! My grandfather is a patient and caring man and sometimes I think he is a magician. He's always guessing what I want to do or to eat or what I feel inside. When I am sad, he always makes me laugh with his funny faces. He puts me on his shoulders, he tells me many stories (I know they are imaginary, but I pretend they are real!), he even sings for me!Everyday my grandfather Tim prepares my breakfast, he drives me to school and picks me up at the end of classes, he helps me with my school work, he takes me to the swimming pool, he plays chess with me and he counts the stars with me. You know, my grandfather is the only grown - up I know who truly understands me. I love him very much!How old is Lucy’s grandfather?

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