A. It's important to reuse and recycle e-waste.

B. Olympic Games deserve more appreciation.

C. Technological advances benefit the Olympic Games.

D. The technology to handle e-waste should be improved.

51. Which of the following is TRUE according to the text?

A. The US produces 20 to 50 million tons of "e -waste" every year.

B. Apple recovered two tons of gold, silver and bronze from old tech in 2014.

C. The Restart Project offers a free service to repair electronics.

D. Janet Gunter advises people to learn how to repair gadgets if possible.

C

TICK, tick, tick…before yoknow it, it is 11 o'clock at night and yohave finished your home-work. Feeling tired and sleepy, yohesitate over whether to check the latest updates on your QQ space or not. "What if human beings didn't need to sleep anymore?” yomay wonder.

In fact, the limits of how long human beings can stay awake have long been challenged and studied.

There is a widely recognized record that was set in 1965 by a 17 - year - old American high school student named Randy Gardner. He did not sleep for 264 hours (about 11days) for an experiment. Other unofficial reports describe soldiers staying awake for four days in battle and patients who have gone with-out sleep for three or four days. Although lack of sleep did not cause serious physical or mental illness, all of them showed weakened brain response in areas such as concentration and motivation:

So far the reason why humans fall asleep remains a mystery, but there is no doubt that enough sleep is good for human body functions. As Erin Hanlon, an assistant professor at the University of Chicago, told the BBC, there is something about sleep that seems to "reset" the systems in our bodies. That is why we feel refreshed after a good snooze.

On the other hand, lack of sleep could affect our health both physically and mentally. Director of Sleep Medicine, Atul Malhotra, at the University of California, told the BBC that when someone often stays up all night and does not have high quality s1eep, stress hormones increase in his or her blood, causing high blood pressure. Meanwhile, the rhythm of the heart is affected, causing dizziness【头晕目眩)and a tight chest. As the person continues to fight off sleep, he or she may feel anxious, stressed and groggy. He or she is also likely to come down with illness.

Another surprising fact is that some people really don't sleep for days or even months. This is because a rare genetic disease leads to disorders of a deep area of the brain that controls sleep. Although they do not feel sleepy, their organs and brain are actually hurt by overuse, which can cause muscle pain, unusual sweating and losing weight.

Good sleep is important for us. Burning the midnight oil is not always a good idea. Keeping a balance between work and life seems to be the key to helping us feel energetic, healthy and powerful.

52. Experiments and records are used in Paragraph 3 to .

A. prove that one can do without sleep for three or four days

B. prove that less sleep does not make one ill or sick

C. show that sleep has been studied for a very long time

D. show that one's brain can be harmed if one stays awake for too long

53. The underlined word "refreshed” in the fourth paragraph can be replaced by .

A. pure again B. energetic again C. hot again D. happy again

54. According to Atul Malhotra, lack of sleep .

A. will result in heart attacks B. only harms physical health

C. can cause anxiety, high stress and illness D. causes constant headaches and high blood pressure

55. If one really doesn't sleep for days or even months, .

A. one's genes become affected by a disorder

B. the area of one's brain that controls sleep stops working

C. one's organs and brain are not affected at all

D. one's body and brain still suffer negative effects

请认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入最恰当的单词。

注意：每空填一词。

I will readily admit: it took me a long time to grow up. I graduated from Michigan State University in 1980 at the age of 23, with a freshly printed bachelor's degree in psychology and at a loss what I really want to do. I didn't find my way in love and work until many years later. Eventually, I got my first long- term job, married at 36 and had my kids at 42.

In our society, many people can't share warm and friendly views of emerging(新兴的)adults. There are some prejudices against such young adults.

One of the most common insults about today's emerging adults is about their laziness. Young people are thought to be "slackers" who don't work whenever possible. It's true that some work that young adults today expect to get tend to be beyond them and often unrealistic, but lazy? That's false. They don't simply sit around and play video games and update their Facebook page all day. Actually the majority of them spend most of their twenties in a series of low - paying jobs as they search for something better. It's unfair to think of them as "slackers”because of only a small percentage of them.

Another widespread view against emerging adults is that they are selfish. It's thought that they only center on themselves and believe they can be whatever they want to be. But that doesn't mean they are selfish. It simply means that they have high confidence in their abilities to make a good life for themselves, whatever obstacles they might face.

As for the claim that they never want to grow up, it's true that entering the full range of adult responsibilities comes later than it did before, in terms of completing education and entering marriage and parenthood. Although young adults are afraid of adulthood and in no hurry to get there, by the age of 30, most young adults have a marriage partner, at least a child, and a stable long - term job. So it's not true that they never grow up. Most of them just want to make use of their freedom while they have the chance. That's wise but we don't give them enough credit.

The origins of the many prejudices against today's emerging adults are complex. Maybe one key reasons that many of their elders still use old yardsticks to measure their progress. However, hopefully, peoples' attitudes and measuring yardsticks will change with the pace of society.