1 . Ways Your Cell Phone Affects Your Body and Mind
First, some good news. Your phone can keep you safer. A study found that 137 more lives were saved per 100,000 patients when people called 911 from a mobile phone rather than from a fixed one.
Scanning your phone right before bed can cause sleep disorder. To avoid that, make a habit of not using your phone for at least 30 minutes before you close your eyes.
When you are awake, a single sound on your phone can signal the coming news. However, this can weaken your ability to focus on a task.
Memory suffers too.
It would be easy to avoid all these problems by simply putting down your phone. The problem: It isn’t so easy.
| A．But there are plenty of worries too. |
| B．Your phone can do damage to your eyes. |
| C．Silence your phone or simply put it away can help. |
| D．Walking with your face in your phone can be dangerous. |
| E．People may feel painful when separated from their phones. |
| F．Your hand may feel painful when you hold your phone too long. |
| G．Using a map and trying to remember it may be better for your brain. |
2 . Scientists and spiritual teachers alike agree that the simple act of smiling can transform you and the world around you. It can make us appear more attractive to others.
How Smiling Affects Your Brain
The act of smiling activates neural messaging that benefits your health and happiness. For starters, smiling activates the release of neuropeptides (神经肽) that work toward fighting off stress. The feel-good neurotransmitters (神经介质) are all released when a smile flashes across your face as well.
How Smiling Affects Your Body
You’re actually better-looking when you smile. A study published in the journal Neuropsychologia reported that seeing an attractive, smiling face activates the region in your brain that processes sensory rewards.
Did you know that your smile is actually contagious (传染性的)? In a Swedish study, subjects were shown pictures of several emotions: joy, anger and surprise. When the picture of someone smiling was presented, the researchers asked the subjects to frown. Instead, they found that the facial expressions went directly to what subjects saw.
| A．How Smiling Affects Those Around You |
| B．Each time you smile, you throw a little feel-good party in your brain. |
| C．So if you’re smiling at someone, it’s likely they can’t help but smile back. |
| D．And it can even lengthen our lives. |
| E．How Smiling Affects Your Facial Expressions |
| F．They not only relax your body, but also lower your heart rate and blood pressure. |
| G．This suggests that when you view a person smiling, you actually feel rewarded. |
3 . LONE TREE, colorado-patanjali Rao, a 15-year-old Colorado high school student and young scientist, who has used artificial intelligence （AI） and created apps to deal with social problems, has been named Time magazine's first-ever "Kid of the Year".
Time says Rao stood out for creating a world-wide community of young inventors and inspiring them to go after their goals. Rao insists that starting out small doesn't matter, as long as you have a passion （热爱）for it.
Rao's sense of invention started early. At age 12, she developed a portable device to discover lead in water. She has also created an app called Kindly that uses artificial intelligence to help prevent cyberbullying （网络欺凌）. It allows teens to type in a word or phrase to find out if the words they are using are bullying and lets them decide what they are sending.
She said that "Work is going to be in our generation's hands pretty soon. So if no one else is going to do it, I'm going to do it.”
Rao has partnered with schools, museums, and science, technology, engineering and math organizations, and other societies to work for thousands of other students.
In a world where science is increasingly questioned or challenged, Rao insists that devotion to science is an act of kindness and the best way that a younger generation can better the world. “We have science in everything we're involved in, and I think the biggest thing to put out there is that science is cool, innovating is cool, and anybody can be an innovator," Rao says.
"Anybody can do science.”
1. What do we know about Rao?| A．She has created apps to deal with mental problems. |
| B．She has set a good example for the younger generation. |
| C．She has been named Time magazine's "Youth of the Year”. |
| D．She thinks that only the younger generation can better the world. |
| A．Time waits for no man. |
| B．Ups and downs make one strong. |
| C．Passion and devotion help to promote excellence. |
| D．Good habits formed at youth make all the difference. |
| A．A newspaper | B．A diary. |
| C．A travel brochure. | D．A history book. |
4 . Traveling with kids is 90 percent reminding yourself to live in the moment and 10 percent making up your mind to never again leave your house.
I have an uncanny ability to forget this as soon as we return home from a trip and I've finished washing piles of dirty clothes in our luggage and cleaning all the messy caused by the kids. Extremely tired and annoyed, I would actually begin to miss the place we just left!
Family travel is like childbirth, I suppose. Painful, loud, messy, sort of awful, actually, but also wonderful. And you remember only the wonderful—until you’re back on a plane and your kids are fighting over who gets the aisle seat. Then you remember the bad stuff.
Last weekend, my kids and I flew to Texas for a trip we would have nothing to complain(抱怨) about—big hotel, wonderful view.
And yet—we found things to complain about. The pool was bigger in that other hotel! Why do you get to shower first? They call this coffee?! Luckily, I’ve learned to put my metaphorical coat of armor (盔甲) on as soon as we land somewhere, and it forces complaints to bounce off me and land in a pile at my feet.
For three days, genuine fun was had and annoying complaints were heard and ignored. Until it was time to catch a plane and fly home.
Unfortunately, our flight was canceled. We spent hours finding a hotel room. We hit the hotel pool before bed and swam well into the night, my kids making up songs and laughing so hard at their silly lyrics (歌词) and their crazy good fortune to be swimming at 10: 30 on a school night.
And that was when it hit me that family travel is all those things I said before but it’s also a lot more. It’s taking your kids to parts of the world that will open their eyes and finding that actually, yours need opening too. It’s remembering that joy and memories are where you make them, not where you find them.
1. The underlined word “uncanny” in Paragraph 2 is closest in meaning to .| A．unknown. | B．uncertain. |
| C．unexpected. | D．unusual. |
| A．they both cause financial trouble and pain. |
| B．they are both hard as well as rewarding. |
| C．childhood memories come flooding back when they travel. |
| D．both of them need many preparations. |
| A．she tries to deal with the complaints more wisely and properly. |
| B．she turns those annoying complaints into a means to educate kids. |
| C．she has improved her language skills when handling the complaints. |
| D．she has succeeded in escaping kids’ fighting thanks to the armor. |
| A．family vacation benefits her kids as well as her. |
| B．joy and memories should be created rather than discovered. |
| C．the most unforgettable memory for her is about the complaints. |
| D．she has to spend some time on housework after the family vacation. |
5 . Getting less sleep has become a bad habit for most American kids. According to a new survey(调查) by the National Sleep Foundation, 51% of kids aged 10 to 18 go to bed at 10 pm or later on school nights, even though they have to get up early. Last year the Foundation reported that nearly 60% of 7- to 12-year-olds said they felt tired during the day, and 15% said they had fallen asleep at school.
How much sleep you need depends a lot on your age. Babies need a lot of rest: most of them sleep about 18 hours a day! Adults need about eight hours. For most school-age children, ten hours is ideal(理想的). But the new National Sleep Foundation survey found that 35% of 10- to 12-year-olds get only seven or eight hours. And guess what almost half of the surveyed kids said they do before bedtime? Watch TV.
“More children are going to bed with TVs on, and there are more opportunities(机会) to stay awake, with more homework, the Internet and the phone,” says Dr. Mary Carskadon, a sleep researcher at Brown University Medical School. She says these activities at bedtime can get kids all excited and make it hard for them to calm down and sleep. Other experts say part of the problem is chemical. Changing levels of body chemicals called hormones not only make teenagers’ bodies develop adult characteristics, but also make it hard for teenagers to fall asleep before 11 pm.
Because sleepiness is such a problem for teenagers, some school districts have decided to start high school classes later than they used to. Three years ago, schools in Edina, Minnesota, changed the start time from 7:25 am to 8:30 am. Students, parents and teachers are pleased with the results.
1. What is the new National Sleep Foundation survey on?| A．American kids’ sleeping habits. | B．Teenagers’ sleep-related diseases. |
| C．Activities to prevent sleeplessness. | D．Learning problems and lack of sleep. |
| A．7 hours. | B．8 hours. |
| C．10 hours. | D．18 hours. |
| A．They are affected by certain body chemicals. |
| B．They tend to do things that excite them. |
| C．They follow their parents’ examples. |
| D．They don’t need to go to school early. |
6 . Are we getting more stupid? According to Gerald Crabtree, a scientist at Stanford University in the US, we are. You may not want to hear this, but Crabtree believes that human intelligence reached its peak more than 2,000 years ago and ever since then has been going downhill. “If an average Greek from 1,000 BC were transported to modern times, he or she would be one of the brightest among us,” Crabtree told The Guardian.
At the heart of Crabtree’s thinking is a simple idea. In the past, intelligence was critical for survival when our ancestors had to avoid dangerous animals and hunt for food. The difference of being smart or stupid is often life or death. However, after the spread of agriculture, when our ancestors began to live in dense (稠密的) farming communities, the need to keep their intelligence in peak condition gradually reduced. This is not hard to understand. Most of the time, pressure is what keeps us going — you need the pressure from your teachers to finish your homework; the pressure of looking pretty prompts (促使) you to lose weight when summer comes. And the same is also true of our intelligence — if we think less, we become less smart.
These mutations (变) are harmful to our intelligence and they were all developed in the past 3,000 years. The other evidence that Crabtree holds is in our genes. He found that among the 2,000 to 5,000 genes that we have that determine human intelligence, there are two or more mutations in each of us. However, Crabtree’s theory has been criticized by some who say that early humans may have better hunting and surviving abilities, but people today have developed a more diverse intelligence. For example, spearing a tiger doesn’t necessarily require more brainpower than playing chess or writing a poem. Moreover, the power of modern education means a lot more people have the opportunity to learn nowadays. “You wouldn’t get Stephen Hawking 2,000 years ago. He just wouldn’t exist,” Thomas Hills of the University of Warwick, UK, told Live Science. “But now we have people of his intellectual capacity doing things and making insights (洞察力) that we would never have achieved in our environment of evolutionary adaptation.”
1. What is Crabtree’s recent finding according to the article?| A．The Greeks from 1,000 BC could have been the smartest in human history. |
| B．Our ancient ancestors had no better surviving abilities than we do nowadays. |
| C．Humans have been getting steadily more intelligent since the invention of farming. |
| D．Mutations in genes that decide human intelligence have affected the development of intelligence. |
| A．had many more genes that determine human intelligence |
| B．were forced to be smart due to natural selection pressures |
| C．relied more on group intelligence than individual intelligence |
| D．developed a diverse intelligence to adapt to the hard realities |
| A．people today are under much more pressure than early humans |
| B．it’s ridiculous to compare a hunter’s and a poet’s intelligence |
| C．modern education is far more advanced than ancient education |
| D．human intelligence nowadays is different from that of the distant past |
| A．Supportive. | B．Unfavorable. |
| C．Worried. | D．Confused. |
7 . Johnny Smith was a good math student at a high school. He loved his computer. He came home early every day, then he worked with it till midnight. But Johnny was not a good English student, not good at all. He got an F in his English class. One day after school Johnny joined his computer to the computer in his high school office. The school office computer had the grades of all the students: the math grades, the science grades, the grades in arts and music, and the grades in English. He found his English grade. An F! Johnny changed his English grade from an F to A. Johnny' parents looked at his report card. They were very happy. "An A in English!" said Johnny's Dad. "You're a very clever boy, Johnny."
Johnny is a hacker. Hackers know how to take informationfrom other computers and put new information in. Using a modem, they join their computers to other computers secretly. School headmasters and teachers are worried about hackers. So are the police, for some people even take money from bank computer accountand put it into their own ones. And they never have to leave home to do it! They are called hackers.
1. Johnny changed his English grade with the computer in _______.| A．the classroom | B．the school office |
| C．a bank near his house | D．his own house |
| A．Johnny was good at math | B．Johnny loved computers |
| C．Johnny could join one computer to another | D．they thought Johnny was not poor in English any longer |
| A．Johnny's parents | B．School headmasters, teachers and the police. |
| C．The police. | D．School headmasters and teachers. |
| A．Information | B．Back computer accounts |
| C．Computers. | D．Grades. |
| A．Johnny | B．computers |
| C．hackers | D．moden |
