Helen Keller, American blind writer, said: if I were given three days to see, I would not want to see too many wonderful things.
National Eye Caring Day in China is on June 6th, which came from 1996.
Most people are born with good eyesight. But look at the students in college, we can see over ninety percent of them are wearing glasses.
| A．It can do harm to our health and bring us trouble. |
| B．At that time the doctors advised the government to name a day. |
| C．Because when the darkness came, I would miss them too much. |
| D．So it is important to let the public know the ways to protect eyes. |
| E．What's more, a balanced diet is necessary to keep our eyes healthy. |
| F．Parents have the responsibility to supervise kids to protect their eyes. |
| G．The young generation often watch the electronic products for a long time. |
相似题推荐
【推荐1】Researchers out of Australia’s Flinders University recently studied various physical reactions during sleep when exposed to noise. They found that certain levels of noise while sleeping, even those below recommended safe levels, may affect a person’s cardiovascular (心血管的) response. When slowly activated during sleep, these responses “could potentially have adverse effects on the cardiovascular system,” said researchers.
Researchers exposed 20 adult participants to various decibels (分贝) of wind farm and road noise while asleep, and then monitored physical responses including blood flow and heart rates as well as sleep awakenings. Although asleep, participants reacted to these noises, as found by the researchers.
For example, a 48-decibel (dB) noise, which is quieter than the 50-dB hum of a refrigerator, was 3. 4 times more likely to cause a change in participants’ pulse wave amplitude (脉搏波振幅), which is a measurement that relates to blood flow. Participants’ heart rates responded to the noise as well. After being exposed to a noise of over 40 dB, they experienced an increase followed by a decrease in their heart rates. The study noted that these sound levels are under the recommended 70 dB limit by the World Health Organization.
Physiological reactions that the study monitored, such as heart rates and blood flow, may root in the proper responses that may be “potentially needed to defend against threats during sleep,” researchers said.
Sleep is typically a time for the body to rest and recover, and noise-caused activation of these cardiovascular responses during sleep may prevent a person from getting the proper amount of healthy sleep they need.
Researchers noted that being exposed to noise pollution during sleep may increase the risk of cardiovascular disease, such as hypertension, heart disease, and other harmful health effects. To help reduce the potential increased health risks caused by frequent noise-caused sleep disturbances, researchers note that their findings help create public policies around noise levels during sleep.
1. What does the underlined word “adverse” in the first paragraph mean?| A．Positive. | B．Obvious. | C．Harmful. | D．Common. |
| A．Pulse wave amplitude. | B．Sense of safety and duty. |
| C．Blood flow and heart rates. | D．Possible sleep awakening. |
| A．All people can rest and recover in noise-free environments. |
| B．Physiological reactions can be monitored for most people. |
| C．Frequent noise-caused sleep disturbances will disappear soon. |
| D．Official policies can be put on noise pollution to guarantee better sleep. |
| A．Noise during sleep affects your heart. |
| B．Noise-free sleep is changing your life. |
| C．Noise pollution during sleep will be banned. |
| D．Various physical reactions arise during sleep. |
【推荐2】There is an English saying: “Laughter is best medicine.” Until recently, few people took the saying seriously. Now, however, doctors have begun to look into laughter and the effects it has on the human body. They have found that laughter really can improve people’s health.
Tests were carried out to study the effects of laughter on the body. People watched funny films while doctors checked their heart, blood pressure, breathing and muscles. It was found that laughter has similar effects to physical exercises. It increases blood pressure, the heart beating and breathing. It also works several groups of muscles in the face, the stomach, and even the feet. If laughter exercises the body, it must be beneficial.
Other tests have shown that laughter appears to be able to reduce the effect of pain on the body. In one experiment doctors produced pain in groups of students who listened to different radio programs. The group that tolerated(忍受) the pain for the longest time was the groups which listened to a funny program. The reason why laughter can reduce pain seems to be that it helps to produce a kind of chemicals in the brain which diminish both stress and pain.
As a result of these discoveries, some doctors in the United States now hold laughter clinics, in which they help to improve their patients’ condition by encouraging them to laugh. They have found that even if their patients do not really feel like laughing, making them smile is enough to produce beneficial(有益的) effects similar to those who are caused by laughter.
1. The main idea of the passage is ________.| A．laughter and physical exercises have similar effects. |
| B．smile can produce the same effects as laughter |
| C．pain can be reduced by laughter |
| D．laughter is best medicine |
| A．test | B．stop | C．reduce | D．increase |
| A．to give better condition to their patients |
| B．in order to improve patients’ health |
| C．to make patients smile all the time |
| D．to prove smile and laughter have the same effect |
【推荐3】A new research led by University of Pittsburgh psychologists shows that older adults may be able to prevent declines (衰退) in a certain kind of memory by sticking to regular exercise.
From the study, exercising about three times a week for at least four months is how much people need to obtain the benefits in episodic memory. Episodic memory, which is supported by a part of the brain that’s known to benefit from exercise, is the kind that deals with events that happened to you in the past. It’s also one of the first to decline with age.
Exercise that gets the heart pumping has shown promise in increasing brain health, and experiments in mice show that it improves memory — but studies looking at the same link in humans have come out mixed.
During the research, the team read 1,279 studies carefully, eventually narrowing them down to just 36 that met specific criteria (标准). Then they used specialized software and no small number of Excel spreadsheets to transform the data into a form where the different studies could be directly compared. That work paid off when they found that pooling together those 36 studies was enough to show that for older adults, exercise can indeed benefit their memory.
Past analyses looking at connections between exercise and memory didn’t find one, but the team took several extra steps to give them the best chance of finding a link if one did exist. They limited their search to particular groups and age ranges as well as a specific kind of strict experimental setup. Another key was focusing specifically on episodic memory.
With that much larger pool of participants, the team was able to show a link between exercise and episodic memory. The team also found the greatest effects of exercise in those who hadn’t yet experienced any cognitive (认知的) decline.
1. What can we learn about “episodic memory”?| A．It benefits from regular exercise. |
| B．It has nothing to do with age. |
| C．It deals with things happening now. |
| D．It is connected with the whole brain. |
| A．By carrying out 1,279 studies. |
| B．By making specific criteria. |
| C．By doing experiments in mice. |
| D．By comparing different studies. |
| A．The team got the findings by chance. |
| B．The participants were chosen from all ages. |
| C．The study focused on all kinds of memories. |
| D．People without cognitive decline benefit most from exercise. |
| A．Benefits from Regular Exercise |
| B．Advice on How to Exercise for the Old |
| C．Studies Find Ways to Improve Memories |
| D．Exercise Helps the Older Keep Memories |
【推荐1】Social networks are a big part of nearly every teenager's life in this day and age. Many teens have QQ, WeChat, or Weibo but little do a lot of teens know that they can be held responsible for everything they post for the rest of their lives. Everything you post online is part of a digital footprint that can always be traced (追踪) back to you. That includes every post, even every like, comment, favorite and forward that you have ever committed. All pictures you've posted or will post have been stored in a digital database, and it is the companies' right to keep all of these documents that you believe to have been deleted or hidden.
With every post comes a consequence; whether it is good or bad, what you post could be seen by anyone. That is why you have to be very careful of what you decide to post or comment.
If you think you are safe from Servite finding out about one funny comment you made six months ago on a meaningless picture, you are probably wrong. Recently, a senior, Aaron, at Servite learned this lesson the hard way this year. He wrote a series of ugly comments towards Connelly girls on a web page, ignoring potential consequences.
This student, however, did have to face consequences from Servite as he was removed from all of his leadership roles in the school. Surprisingly enough, he fully agreed with his punishment handed down by the administration and fully understood why he was given such severe discipline (处罚). “When you agree to come to Servite, you are agreeing to defend what Servite stands for,” the young man said. “That continues from 8 am to 2 pm. It's at all times.”
So, next time you're about to post something you think could be received as offensive or inappropriate, think twice, or don't press the “Send”.
1. What does the author think the teens should do in the first paragraph?| A．Avoid using social media. |
| B．Remove their own digital documents. |
| C．Be responsible for what they put online. |
| D．Learn to balance their online and offline time. |
| A．Drawing some meaningless pictures. |
| B．Making some bad comments. |
| C．Failing to take his lesson. |
| D．Breaking down a special web page. |
| A．It reached an agreement with Connelly girls. |
| B．It helped Aaron get rid of ill effects. |
| C．It gave Aaron a severe punishment. |
| D．It stood on Aaron's side. |
| A．Teenagers. | B．Teachers. |
| C．Parents. | D．Network engineers. |
【推荐2】Television has transformed politics in the United States by changing the way in which information is spread, by altering political campaigns, and by changing citizen’s patterns of response to politics. By giving citizens independent access to the candidates, television reduced the role of the political party in the selection of the major party candidates. By centering politics on the person of the candidate, television accelerated the citizen’s focus on character rather than issues.
Television has altered the forms of political communication as well. The messages on which most of us rely are briefer than they once were. The stump speech, a political speech given by traveling politicians and lasting 1 to 2 hours, which was popular in the nineteenth-century, has given way to the 30-second advertisement and the 10 second “sound bite” in broadcast news. Increasingly the audience for speeches is not that standing in front of the politician but rather the viewing audience who will hear and see a short video of the speech on the news.
In these simplified forms, much of what comprised the traditional political speech of earlier ages has been lost. In 15 or 30 seconds, a speaker cannot establish the historical context that shaped the issue in question, cannot detail the probable causes of the problem, and cannot examine alternative proposals to argue that one is preferable to others. In short videos, politicians assert (断言) but do not argue.
Because television is an intimate (亲密的) medium, speaking through it requires a changed political style that is more conversational, personal, and visual than that of the old-style stump speech. Reliance on television means that increasingly our political world contains memorable pictures rather than memorable words. Schools teach us to analyze words and print. However, in a world in which politics is increasingly visual, informed citizenship requires a new set of skills.
Recognizing the power of television’s pictures, politicians craft televisual, staged events designed to attract media coverage. Much of the political activity we see on television news has been crafted by politicians, their speechwriters, and their public relations advisers for televised consumption. Sound bites in news and answers to questions in debates increasingly sound like advertisements.
1. It is suggested in paragraph 4 that ________.| A．politicians need to learn to become more personal |
| B．attractive politicians are favored by citizens |
| C．citizens tend to favor a politician who analyzed issues |
| D．citizens need to learn how to evaluate visual political images |
| A．Political presentations today are more like advertisements than in the past. |
| B．Politicians today tend to be more familiar with the views of citizens than in the past. |
| C．Citizens today are less informed about a politician’s character than in the past. |
| D．Political speeches today focus more on details about issues than in the past. |
【推荐3】Alarming levels of dangerous chemicals known as Perfluorinated Alkylated Substances (PFAS) were discovered in food packaging at a number of well-known fast-food restaurants and grocery store chains, a new report found. The report comes more than two years into the Covid-19 pandemic, when the public has relied heavily on takeout and grocery deliveries.
Often called “forever chemicals” because they do not break down in the environment, PFAS are used in food packaging to prevent grease (油脂) and water from soaking through food wrappers and cups. PFAS can also be found in the ink used to print logos and instructions on food containers.
The US Centers for Disease Control and Prevention calls exposure to PFAS a “public health concern”, citing that the human-made chemicals can harm the immune system and reduce a person’s resistance to infectious diseases.
Regulatory limits for how much PFAS food packaging should contain can vary greatly. For instance, a new law in California set the limit at less than 100 ppm. “Compared to America, Denmark sets a much lower regulatory limit of 20 ppm with great success,” said Xenia Trier, an expert at the European Environment Agency. “It does work to set limits and enforce them. PFAS do migrate from the paper into the food. Even though it was not 100%, we still saw considerable transmission. In general, transmission from packaging to food is increased as the temperature of the food rises. It is the same with the time spent in wrapping materials.” Trier told NBS, one of the major American mass-media companies.
In response to the issue, Whole Foods became the first grocery chain to publicly commit to remove PFAS from takeout containers and bakery paper. Many other companies followed suit. Experts say people who want to avoid PFAS in their takeout and food delivery packaging should favor companies that have promised to remove the chemicals. “As soon as you receive your takeout, you’d better take food out of the container immediately, and never reheat food in its original container. Instead, remove your food and heat it in ceramic (陶瓷的) or glass containers.” Trier said.
1. What can we learn about PFAS in food packaging?| A．They have been used for two years. |
| B．They do little harm to consumers’ health. |
| C．They are used to break down the chemicals. |
| D．They can make wrappers resistant to grease and water. |
| A．Favorable. | B．Neutral. |
| C．Ambiguous. | D．Opposed. |
| A．Considerable migration of grease and water. |
| B．PFAS transmission from packaging to food. |
| C．Wrapper exposure to high food temperature. |
| D．Regulatory limits concerning food packaging. |
| A．Food packaging contains dangerous chemicals. |
| B．Consumers are recommended to have PFAS-free products. |
| C．PFAS found in food packaging has become a great concern. |
| D．The government has taken measures to reduce PFAS exposure. |
