Feifei,an 11-year-old boy from Xuzhou,Jiangsu Province,suffered from a sudden acute eye disease which has almost led to blindness.The disease was caused by excessive(過(guò)度的)eye fatigue(疲勞)during the winter vacation, during which he played computer games for continuous 10 days and nights.
Many youngsters in China nowadays are increasingly addicted to computer games and other electronic products. This is followed by a series of health problems,with the most typical case being myopia,or nearsightedness.
According to the latest research report released by the World Health Organization (WHO),the myopia rate among Chinese teenagers ranks first in the world—70 percent of high school and college students.The rate is nearly 40 percent in primary school students,while it is only 10 percent for their peers in the United States.
There are at least 10 million people in China with severe myopia,and they are likely to get pathological(病理性的)myopia in middle age.Pathological myopia can't be treated with glasses or surgery,and it is one of the biggest factors that lead to blindness,Xu Xun,director of the ophthalmology(眼科學(xué))department at Shanghai General Hospital,pointed out.
Experts explain that two major factors lead to the high rate of myopia among Chinese people.One is high academic pressure,and the other one is excessive use of electronic devices over a long period of time.Genetics,on the other hand,are not the main reason,as only 20 percent of Chinese people had myopia in the 1960s.
"Teenagers are now faced with severe academic pressure,which means they often study without natural light. This increases their risk of becoming nearsighted,"Xu said.
Experts suggest that youngsters maintain a proper balance between study and rest so as to protect their eyesight, and parents should play an active role in the process.
1.Why does the author mention Feifei's experience in the first paragraph?
A. To advise people to protect their eyes.
B. To introduce the topic of nearsightedness.
C. To inform people of the cause of blindness.
D. To show that Feifei developed an eye disease.
2.What can be learnt from the passage?
A. Nearsightedness may cause other health problems.
B. There are more nearsighted students in the United States.
C. 70 percent Chinese students in primary school are nearsighted.
D. Pathological myopia is most likely to cause blindness.
3.Which of the following can be a main reason for myopia?
A. Genetics factors.
B. Low academic pressure.
C. Overuse of electronic devices.
D. Reading in natural light.
4.What will be probably discussed in the following paragraph?
A. The significance of protecting eyesight.
B. Youngsters’ bad behavior leading to myopia.
C. The relationship between youngsters and their parents.
D. Parents’ role in helping youngsters protect thew eyesight.
年級(jí) | 高中課程 | 年級(jí) | 初中課程 |
高一 | 高一免費(fèi)課程推薦! | 初一 | 初一免費(fèi)課程推薦! |
高二 | 高二免費(fèi)課程推薦! | 初二 | 初二免費(fèi)課程推薦! |
高三 | 高三免費(fèi)課程推薦! | 初三 | 初三免費(fèi)課程推薦! |
科目:高中英語(yǔ) 來(lái)源:山東省濟(jì)南市2017-2018學(xué)年高二上學(xué)期開(kāi)學(xué)考試英語(yǔ)試卷 題型:單項(xiàng)填空
He ________ some of his old love letters in his wife's desk.
A. came out B. came across
C. came about D. came up
查看答案和解析>>
科目:高中英語(yǔ) 來(lái)源:貴州省2018屆高三第一次模擬考試(9月月考)英語(yǔ)試卷 題型:信息匹配
Easy Ways to Keep Your Brain Sharp
Everyone is forgetful, but as we age, we start to feel like our brains are slowing down a bit—and that can be a very annoying thing. 1. Read on for some techniques worth trying.
1. 2.
People who regularly made plans and looked forward to upcoming events had a 50 percent reduced chance of Alzheimer's disease (早老性癡呆癥), according to a recent study. 3.Something as simple as setting a goal to have a weekly coffee date with a friend will do. There's evidence that people who have a purpose in life or who are working on long or short-term goals appear to do better. In other words, keep your brain looking forward.
2. Go for a walk
Mildly raised glucose (葡萄糖) levels can harm the area of the brain that helps you form memories and physical activity can help get blood glucose down to normal levels. In fact, exercise produces chemicals that are good for your brain. 4.
3. Learn something new
Take a Spanish class online, join a drawing club, or learn to play cards. A study found that mental stimulation (刺激) limits the weakening effects of aging on memory and the mind. But the best thing for your brain is when you learn something new and are physically active at the same time. 5.Or go dancing with your friends.
A. Focus on the future.
B. This can be especially harmful to the aged.
C. It should be something like learning gardening.
D. So take a few minutes each day to do some reading.
E. But don't worry if your schedule isn't filled with life-changing events.
F. Luckily, research shows there is a lot you can do to avoid those moments.
G. In other words, when you take care of your body, you take care of your brain.
查看答案和解析>>
科目:高中英語(yǔ) 來(lái)源:山東省臨沂市2018屆高三9月學(xué)情調(diào)研考試英語(yǔ)試卷 題型:完形填空
I am a social worker. I wanted to tell everyone about my very dear friend who passed away a few months ago.
I met him many years ago while doing my internship (實(shí)習(xí)) in the county prison. He was ______ a program he had designed to help prisoners with drug and alcohol problems. He was always ______ new ways to bring hope and help to these men and their ______.
One of his favorite ______ was the Toy Drive he would run every Christmas for the children of the prisoners. He did this for twenty years ______ his sudden death. As last Christmas ______, I decided that this tradition had to be ______, for the children as well as the ______ of my friend.
But the file where he kept the names of the people who had helped him over the years had gone ______. I had to start anew (重新) and with very little ______! I started making phones calls, explaining about the project and my ______. I prayed every night that the event would, ______, be worthy of my friend.
To my great ______, individuals, churches and businesses began to come on board and, ______, I had enough toys to give to all the children of the prisoners with some left over for the local community ______!
When Christmas Eve finally arrived, I felt very happy, thinking I had done all I could do and reflecting on what a (n) ______ it had been for me. I was bagging up the remaining toys ______ if there was anyone left who might like them. Then my phone rang.
It was my daughter. She ______ to explain about a woman she knew in Kentucky who had five children, one seriously ill, no husband, no heating in the home, no toys! Oh-how could we not?
My daughter and I drove all night, from New York to Kentucky, and those children woke up in a nice warm house with plenty of ______!
My friend’s ______ of kindness lived on that year, reaching all the way to Kentucky!
1.A. recording B. directing C. attending D. improving
2.A. coming up with B. catching up with C. keeping up with D. putting up with
3.A. company B. family C. group D. club
4.A. hobbies B. sports C. events D. games
5.A. until B. after C. because D. since
6.A. finished B. arrived C. followed D. approached
7.A. lived on B. lived out C. carried on D. carried out
8.A. pleasure B. memory C. benefit D. favor
9.A. extra B. hiding C. active D. missing
10.A. energy B. time C. pressure D. confidence
11.A. difficulties B. impression C. atmosphere D. importance
12.A. however B. though C. otherwise D. somehow
13.A. disappointment B. curiosity C. thought D. relief
14.A. absolutely B. eventually C. generally D. occasionally
15.A. as well B. at first C. in particular D. once more
16.A. pity B. honor C. burden D. discovery
17.A. wondering B. realizing C. predicting D. evaluating
18.A. came B. drove C. called D. returned
19.A. candies B. flowers C. chocolates D. toys
20.A. courage B. spirit C. position D. attention
查看答案和解析>>
科目:高中英語(yǔ) 來(lái)源:26省2018屆高三”超級(jí)全能生”高考全國(guó)卷9月聯(lián)考(乙卷)英語(yǔ)試卷 題型:短文改錯(cuò)
假定英語(yǔ)課上老師要求同桌之間交換修改作文,請(qǐng)你修改你同桌寫(xiě)的以下作文。文中共有10處語(yǔ)言錯(cuò)誤,每句中最多有兩處。錯(cuò)誤涉及一個(gè)單詞的增加、刪除或修改。
增加:在缺詞處加一個(gè)漏字符號(hào)(∧),并在其下面寫(xiě)出該加的詞。
刪除:把多余的詞用斜線(xiàn)(\)劃掉。
修改:在錯(cuò)的詞下劃一橫線(xiàn),并在該詞下面寫(xiě)出修改后的詞。
注意:1.每處錯(cuò)誤及其修改均僅限一詞;
2.只允許修改10處,多者(從第11處起)不計(jì)分。
When Nancy got an emergency call from Seattle Hospital, she knew she has no time to waste getting to her mom’s side. While she pulled over to refuel, she found that she’d left her handbag home. Trapped in a truck stop, she felt totally at loss. However, she had to ask for help. Someone sent her up the road to Jim Oliver’s Smoke House, a restaurant where is known for its generosity. In the parking lot, she broke down, tells her story to the owner, Oliver. He gave her a comforting smile while listening patient. Later, much to her astonish, he handed her $ 200 in cash and offered with her a meal.
When Nancy asked how she could pay him back, Oliver waved him on. “You would have done the same if you were me,” said Oliver.
查看答案和解析>>
科目:高中英語(yǔ) 來(lái)源:新人教版2017-2018學(xué)年高一必修1英語(yǔ):Unit 2 第2課 課時(shí)練習(xí) 題型:單項(xiàng)填空
The Town Hall ______ in the 1800’s was the most distinguished building at that time.
A. to be completed B. having been completed
C. completed D. being completed
查看答案和解析>>
科目:高中英語(yǔ) 來(lái)源:新人教版2017-2018學(xué)年高一必修1英語(yǔ):Unit 2 第2課 課時(shí)練習(xí) 題型:單項(xiàng)填空
Do you believe scientists will ______ a cure for cancer in the near future?
A. come up B. come up with
C. come about D. bring about
查看答案和解析>>
科目:高中英語(yǔ) 來(lái)源:牛津譯林版2017-2018學(xué)年高一必修1英語(yǔ):?jiǎn)卧獧z測(cè)卷(一) 題型:單項(xiàng)填空
Chinese government has passed a new law that doesn’t gifts with public funds.
A. approve of its leaders bought
B. approve its leaders to buy
C. approve of its leaders to buy
D. approve of its leaders buying
查看答案和解析>>
科目:高中英語(yǔ) 來(lái)源:2017屆高三高考仿真卷(一)英語(yǔ)試卷 題型:短文填空
While people in Western countries are busy 1.(prepare) Christmas gifts for their loved ones,Chinese people are looking forward to the Spring Festival,China’s most important annual event.What is children’s expected part of the Spring Festival?Chances are that they are longing 2.(receive) red envelopes which contain money.The red color of the envelopes symbolizes wishes for good luck.And the money in them is a symbol of wishing good fortune on children.
One popular story of 3. the red envelopes came from is about a monster 4..(call) Sui appearing on Chinese New Year’s Eve.A sleeping child who was touched by it would develop a fever5.. then become a fool.But a couple prayed so 6..(sincere) that a god sent eight guards disguised as coins to protect their child.From then on,people placed eight coins on a red string and 7.. (hide) them under children’s pillows.
As the Chinese character for “year” has the same 8.. (pronounce) as the monster’s name,people called the coins “ya sui qian”,meaning “9. (luck) money against the evil spirit”.10.. time passing,paper notes replaced the coins and the red envelope replaced the thread.
查看答案和解析>>
百度致信 - 練習(xí)冊(cè)列表 - 試題列表
湖北省互聯(lián)網(wǎng)違法和不良信息舉報(bào)平臺(tái) | 網(wǎng)上有害信息舉報(bào)專(zhuān)區(qū) | 電信詐騙舉報(bào)專(zhuān)區(qū) | 涉歷史虛無(wú)主義有害信息舉報(bào)專(zhuān)區(qū) | 涉企侵權(quán)舉報(bào)專(zhuān)區(qū)
違法和不良信息舉報(bào)電話(huà):027-86699610 舉報(bào)郵箱:58377363@163.com