Scientists have found that human eyes are more likely to be damaged by UV rays while skiing in the snow-covered areas than sitting on the beach, according to a report by the UK newspaper.

The researchers at Kanazawa Medical University, Japan and American company Johnson conducted the study together. They looked at the effects of light reflection on newly fallen snow on a ski trail in Ishikawa District, northern Japan. They compared the results with the levels of UV rays on a sand beach in southern Japan's Okinawa District.

They found that on the beach, eyes are exposed to a daily 260 kilojoules (千焦耳) of UV a square meter compared to 658 kilojoules in snow-covered areas.

The findings are supported by the Japan Meteorological (氣象的) Agency. According to the agency, the reflection rate of UV light on beaches is often between 10 and 25 percent, compared to 80 percent in the new snow areas. The amount of light increased 4 percent with a 300-meter rise in height.

Most of us know that UV rays can harm the skin. That's why we wear sunscreen on our skin before we get out in the sun. But many of us may not realize that UV rays are also harmful to the eyes.

If your eyes are exposed to large amounts of UV radiation over a short period of time, you may experience a kind of sunburn of the eye, which is harmful. Your eyes will become red and feel a strange feeling. They may be sensitive to light. Fortunately, this is usually temporary and seldom causes permanent damage to the eyes.

Long-term exposure to UV radiation, however, can be more serious. Scientific studies and researches have shown that exposure to small amounts of UV radiation over a period of many years increases the chance of eye damage, which could lead to total blindness.

1.You would most likely find the article in ________.

A. a doctor’s diary B. a travel journal

C. a medical magazine D. a physics textbook

2.Which of the following statements is TRUE according to the passage?

A. Too much eye exposure to UV rays may cause total blindness.

B. Short-time exposure of the eyes to UV rays doesn't harm them at all.

C. Most people know that UV rays harm the eyes as well as the skin.

D. The study was conducted by researchers from Japan, the USA and the UK.

3.Human eyes are more likely to be damaged by UV rays while skiing in the snow-covered areas than sitting on the beach because ________.

A. snow produces more UV light than water

B. people don’t wear sunscreen while skiing as they do while sitting on the beach

C. the reflection rate of UV light in snow-covered areas is much higher than that on the beach

D. human eyes are exposed longer to UV light in the snow- covered areas than on the beach

4.What will the passage most probably talk about next?

A. Never ski on newly fallen snow in Japan.

B. Go to hospital to have your eyes examined.

C. Wearing a hat can provide protection while skiing in new snow areas.

D. Take some measures to protect your eyes while skiing in new snow areas.

練習冊系列答案
相關習題

科目：高中英語 來源：2016-2017學年江西省高一4月（第六次）月考英語試卷（解析版） 題型：閱讀理解

Now many young people are traveling around the world on their own, not because they have no one to travel with, but because they prefer to go alone.

Kristina Wegscheider from California first traveled alone when she was at college and believes that it is something everyone should do at least once in their life. ＂It opens up your mind to new things and pushes you out of your comfort zone.＂ Wegscheider has visited 46 countries covering all seven continents.

In foreign countries, it is challenging (difficult)with no one to help you read a map, look after you if you get ill, or lend you money if your wallet is stolen. This is what drives young people to travel alone. It is seen as character building and a chance to prove that they can make it on their own.

Chris Richardson decided to leave his sales job in Australia to go traveling last year. He set up a website, The Aussie Nomad, to document (record) his adventures. He says he wished he had traveled alone earlier. ＂The people you meet, the places you visit, or the things you do, everything is up to you and it forces you to grow as a person,＂ said the 30-year-old man.

Richardson describes traveling alone like ＂a shot in the arm＂, which ＂makes you a more confident person that is ready to deal with anything＂. He said, ＂The feeling of having overcome something on my own is a major part of what drives me each day when I’m dealing with a difficult task. I walk around with my head up because I know deep down inside that nothing is impossible if you try.＂

The great 19th century explorer John Muir once said, ＂Only by going alone in silence can one truly get into the heart of the wilderness.＂

1.Which of the following will Kristina Wegscheider agree with?

A. Traveling alone is a necessary experience for everyone.

B. It is more meaningful to travel in foreign countries.

C. It is comfortable to travel around without a friend.

D. Traveling abroad helps people to find new things.

2.Traveling alone is challenging because ____________.

A. you have to make things on your own

B. it is hard for you to prove yourself to others

C. it will finally build your character

D. you can only depend on yourself whatever happens

3.What can we infer about Chris Richardson?

A. He started traveling alone at an early age.

B. He was once shot in the arm.

C. He used to work as a salesman.

D. His website inspires others a lot.

4.What is the best title for the passage?

A. Travel Abroad B. Travel Alone

C. Travel Light D. Travel Wide and Far

查看答案和解析>>

科目：高中英語 來源：2017屆黑龍江省哈爾濱市高三下學期第一次模擬考試英語試卷（解析版） 題型：短文改錯

假定英語課上英語老師要求同桌之間互相修改作文，請你修改你同桌的以下作文。

文中共有10處語言錯誤，每句中最多有兩處。錯誤涉及一個單詞的增加、刪除或修改。

刪除：把多余的詞用斜線（\）劃掉。

增加：在缺詞處加一個漏字符號（∧），并在該詞下面寫出該加的詞。

修改：在錯的詞下劃一橫線，在該詞下面寫出修改后的詞。

注意：1、每處錯誤及修改均僅限一詞。

2、只允許修改10處，多者（從11處起）不計分。

One day a girl found a dead rat in front of her door. This kind of thing happens a lot of in the city during winter, but she didn’t pay much attention to it. However, the next day it was a dead bird on the doorstep of its house. She thought it was just some jokes playing by those naughty kids. But the same thing happens for a week! She started to get angrily. So she set up a hidden camera on the door, tried to find out the truth, which really gave her big surprise. The criminal was a cat! It left those dead body in front of her house every day at midnight.

查看答案和解析>>

科目：高中英語 來源：2017屆普通高等學校招生全國統(tǒng)一考試仿真卷英語試卷（解析版） 題型：書面表達

（2016年甘肅省河西五市高三二次聯(lián)考） 成語（Chinese idioms）是中國文化的重要組成部分，它能用簡單的詞語表達出豐富并且深刻的意義。假定你是李華，你的外國筆友James對中國成語很感興趣，向你咨詢有關中國成語的信息，請你寫一封回信，包括如下內容：

1.簡單介紹成語;

2.學習成語的益處;

3.分享自己學習成語的感受和體會。

注意：1. 詞數(shù)100左右；

2. 可以適當增加細節(jié)，以使行文連貫。

Dear James,

I am glad that you are interested in Chinese idioms.___________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________

I sincerely hope you can learn them well.

Yours

Li Hua

查看答案和解析>>

科目：高中英語 來源：四川省成都市2017屆高三二診模擬考試英語試卷（解析版） 題型：書面表達

假設你是成都七中學生王小明，你校外教 Martin 最近退休了。請你代表全校學生根據(jù)以下要點，給他寫一封感謝信:

1. 感謝他對學生的付出;

2. 回憶師生共度的快樂時光;

3. 祝福他退休生活愉快。

注意： 1、字數(shù) 100 詞左右；

2、可以適當增加細節(jié)，使行文連貫；

3、信的開頭和結尾已為你寫好 Dear Martin,

How are you doing recently?

Best wishes,

Your students from Chengdu No. 7 High School

查看答案和解析>>

科目：高中英語 來源：2017屆江西省盟校高三第二次聯(lián)考英語試卷（解析版） 題型：短文改錯

假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下短文。短文中共有10處錯誤，每句中最多有兩處。錯誤涉及一個單詞的增加、刪除或修改。

增加：在缺詞處加一個漏字符號（∧），并在此符號下面寫出該加的詞。

刪除：把多余的詞用斜線（＼）劃掉。

修改：在錯的詞下劃一橫線，并在該詞下面寫出修改后的詞。

注意：1.每處錯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）不計分。

Advertising informs consumers of newer products available on the market.It gives us information with everything from shampoo and toothpaste to computers and cars.But there is one serious problems with us.The information are actually very often misinformation.It tells us the products' benefits but hides its advantages. Advertising not only leads us to buying things that we don.t need and can’t afford,but it confuses our sense reality. "Zoom toothpaste prevents bad teeth and gives you the white teeth!" the advertisement tells us.And it doesn’t tell us the complete truth that a health diet and a good toothbrush will have the same effect.

查看答案和解析>>

科目：高中英語 來源：2017屆江西省盟校高三第二次聯(lián)考英語試卷（解析版） 題型：閱讀理解

Ever wonder where chocolate chip cookies came from?Or why we use waffles（華夫餅）as ice cream cones?

Mistakes that Worked,written by Charlotte Foltz Jones,award-winning author of non-fiction books for children, offers forty of these unusual tales,along with many interesting drawings and strange and amazing facts.

The book is divided into six parts: food,medicine,toys,accidental things,names,and I find the book great because if not for the book,I would never have known that something was actually accidentally created.Besides,I like to learn real information;I can't stand books with stories that aren't real.Although this is a non-fiction book and is about inventions,it is not a history of technology book;it's more of an easy reading book.This book would be attractive to both boys and girls,and it could actually be either an adult book or a children’s book.

Published in 1991,the book is a bit old and is showing its age now in 2016.Still,it contains lots of great information,even though some facts are not exact.I love the idea of a mistakes book,and I especially like the format, which allows readers to dip in and out of the book easily.However,the entries are not all equally strong. Additionally, if you don’t live in the US,the book makes little sense,since it is full of American references both historically and in terms of customs.

Anyway,Mistakes that Worked is a reminder that failure is not always the end.It is an enlightening book that encourages us to realize that taking risks and learning to experiment is often the best way to learn,even if we don’t end up creating something new and wonderful.

1.What kind of book is Mistakes that Worked?

A. It's a picture book. B. It's a science book.

C. It's an adult book. D. It's a historical book.

2.What can we infer about the author?

A. He reads too little.

B. He is a slow reader.

C. He is a great reader of non-fiction.

D. He enjoys reading books about inventions.

3.Which of the following does the author especially like about the book?

A. Its facts. B. Its organization.

C. Its entries. D. Its reference.

4.What is the author's opinion on the book?

A. It's a fun read. B. It's a perfect book.

C. It makes little sense. D. It's full of factual mistake

查看答案和解析>>

科目：高中英語 來源：2017屆江西省招生全國統(tǒng)一考試仿真卷英語試卷（六）（解析版） 題型：閱讀理解

Given the tradition of students bringing apples to their teachers, it somehow seems fitting that an old apple barn(谷倉)will find a new life as a one-room schoolhouse. And it is just as fitting that a retired schoolteacher will become the caretaker of that historic treasure.

My friend Velma, a teacher for more than 30 years, has been retired for some time now, but that doesn’t stop her giving history lessons at the old Englewood School, located on her family’s

California farm. The lovingly restored building was constructed around 1850 as a home for a woodsman and later was used as apple barn. Then, in 1870 it began a new life as a schoolhouse.

Originally located in the nearby Englewood meadow, it was now moved its current site in 1978 by Velma’s late husband and his brother, Robert and Richard, who thought it would help keep

Velma busy in retirement. No nails had been used in the original construction, so each piece of wood had to be carefully marked and the building was reassembled（重裝）on its new site. The brothers worked with much care and hard work to ensure a perfect fit of mitered（斜接的）corners.

After the relocation, Velma and her family furnished the school with some of its original desks. They also added a collection of schoolbooks, the oldest dating back to 1845. Perhaps the school’s most cherished souvenir is the diploma of student Hettie Essig, who graduated on June 30, 1904. Hettie’s daughter, Flora, presented Velma with the precious keepsake.

Nowadays Velma gives tours to local schoolchildren and other groups, who learn what it was like to attend school back in the good old days. She has kids ring the school bell, recite the Pledge of Allegiance and sing “Good Morning to You” as they might have done in days gone by. Then, with twinkling eyes and much enthusiasm, she tells the history of the school, and gives a short sample lesson.

1.The Englewood School was originally built as __________.

A. a man’ s house B. a schoolhouse

C. a restroom D. an apple barn

2.Which word can best describe the school’s being relocated?

A. Inspiring B. Refreshing

C. fashionable D. Challenging

3.What does the underlined part “the precious keepsake” in Para.4 mean?

A. The school’s original supplies

B. The collection of schoolbooks

C. The oldest schoolbook

D. The diploma of Hettie Essig.

4.Which can serve as the best title of the passage?

A. The Good Old Days in the Schoolhouse

B. A Mysterious Building with a Long History

C. A Historic One-room Schoolhouse

D. A Teacher Devoted to Restoring Old Buildings

查看答案和解析>>

科目：高中英語 來源：2016-2017學年河北省高二下學期期中考試英語試卷（解析版） 題型：完形填空

A few days ago my family and I were out for an evening walk. As we headed home, dark _____ started rolling in and we knew we probably wouldn’t make it back without getting wet. _____ enough, the rain started falling just as we______ our neighborhood. We all ____ down the street and into the house but when we got there I noticed that one of my sons was _______ I went back out in the rain and found him _____ in an irregular pattern in front of the house. His face was one of ______as he seemed to be going in circles. This is my child that usually hates getting _____.

I shouted to him, “What are you doing?!!”

“I hate getting wet!” he _____ back.

“Then why are you running around in the _____ ? Hurry inside!”

“I’m trying to but I have to _____ the rain drops!”

He was getting more wet than any of the rest of us _____ he was trying to avoid the raindrops. As I went and put him _____ my arm and walked him inside, I realized that there is a good_______in this story.

How often do you_______life “avoiding the raindrops”? How often do you get so worried about the little _____that might happen, the failures that you miss out on the great _____ that you could be having? We can spend all of our time running around in circles trying not to fail or we can accept that failure is going to come and ______forward anyway. Any happy and successful person will tell you that the road to success is _____with failures.

But every time you fail, you learn. Every time you learn, you improve. The more you improve, the more ______ you will be.

1.A. buses B. clouds C. mosquitoes D. smoke

2.A. Sure B. Anxious C. Strange D. Funny

3.A. surrounded B. noticed C. crossed D. entered

4.A. paced B. escaped C. hurried D. advanced

5.A. missing B. outstanding C. disturbing D. charming

6.A. jumping B. trembling C. running D. sliding

7.A. happiness B. pleasure C. excitement D. suffering

8.A. cold B. wet C. hungry D. thirsty

9.A. screamed B. waved C. turned D. looked

10.A. distance B. darkness C. rain D. wind

11.A. collect B. experience C. fight D. avoid

12.A. because B. though C. unless D. if

13.A. with B. under C. by D. beside

14.A. ending B. plot C. lesson D. theme

15.A. care about B. rely on C. sort out D. go through

16.A. failures B. accidents C. emergencies D. disasters

17.A. pains B. dangers C. diseases D. adventures

18.A. float B. wander C. move D. flow

19.A. equipped B. paved C. buried D. covered

20.A. successful B. generous C. considerate D. intelligent

查看答案和解析>>

同步練習冊答案