题目内容
Have you ever walked outside thinking it was one temperature but quickly discovered it felt colder? That is because of the “wind chill” effect.
Wind chill is how cold people and animals feel when they are outside, not the actual temperature on the thermometer(温度计). It is based on how quickly your body loses heat when it is exposed to wind and cold. When the wind is strong, your body quickly loses heat, making the temperature of your skin drop.
When scientists first started calculating wind chill, they used research conducted in 1945 by explorers to Antarctica who measured how quickly water froze outside.
But water freezes faster than exposed skin, so the wind chill index based on that data wasn’t accurate.
In 2001, the US government began to measure wind chill more precisely by testing how quickly people’s skin froze.
Twelve volunteers were placed in a chilled wind tunnel. Equipment was stuck to their faces to measure the heat flow from their cheeks, forehead, nose and chin while they walked three miles per hour on a treadmill(跑步机).
The experiment revealed how quickly exposed skin can be damaged, particularly unprotected areas like your fingers, toes, the tip of your nose and your ear lobes. In fact, 40 percent of your body heat can be lost through your head! Signs you might have frostbite(冻疮) are when the skin turns white or pale and you lose feeling in that area.
The information collected from the volunteers helped scientists work out the math to compute wind chill. It involves wind speed and air temperature.
If, for example, the temperature outside is zero degrees Fahrenheit and the wind is blowing at 15 miles per hour, the wind chill is calculated at 19 degrees below zero. At that wind chill temperature, exposed skin can freeze in 30 minutes.
You can find a calculation table at www.nws.noaa.gov/om/windchill/index.shtml.
Experts advise in cold weather that you wear loose-fitting, lightweight, warm clothing, worn on top of each other. Air caught between the clothes will keep you warm. The best cold-weather coats have head coverings made of woven material that keep out water. So next time the temperature drops and you want to play outside, listen to your parents when they tell you to wrap up warm!
【小题1】 According to the text, wind chill _______.
A.means how fast exposed skin freezes |
B.doesn’t affect your head as much as other body parts |
C.changes according to the temperature on the thermometer |
D.changes from person to person depending on their health |
A.When his skin turns red and he loses feeling in that area. |
B.When he is running faster and he is losing strength quickly. |
C.When his face is exposed and quickly loses heat even indoors. |
D.When his skin turns pale and he has no feeling in that area. |
A.A person’s body temperature and will speed. |
B.Wind speed and a person’s strength. |
C.Air temperature and wind speed. |
D.The location and air temperature. |
A.It was in 1945 that scientists first began to calculate wind chill. |
B.Compared with water, people’s exposed skin freezes more slowly. |
C.The wind chill index based on Antarctica data is considered a standard. |
D.With the development of technology, many previous researches have been proven wrong. |
【小题1】A
【小题2】D
【小题3】C
【小题4】B
解析
I have been using the Internet since I was five years old, when my dad first sat me down in front of a computer and connected me the World Wide Web.
I’ve always felt like a master of the Internet world. AOL Instant Messaging, MSN, Gmail, Facebook, Myspace -- I’ve got it all under control. I thought there was nothing more to it besides checking my e-mail and wasting my time, until I was introduced to electronic commerce(e-commerce): business on the Internet.
Some online businesses are run from one-room home offices. Others have hundreds of employees (雇员) across the world. Have you ever heard of Amazon.com, Yahoo.com?
My friends often said they got cheap textbooks off Amazon.com, or had a good deal (交易) on Steve Madden shoes that were on sale at SteveMaden.com. Unfortunately for me, I continued my “e-commerceless” Web-surfing, not knowing about all the deals I was missing out on.
That is, of course, until my sister finally sold the idea to me.
“Why are all these packages arriving in the mail for you, Katy?” I asked her one day. Strange envelopes (信封) had been put on our doorstep for weeks now, each one always addressed to my sister; and we all know little sisters should never be getting more mail than their elders!
“Oh, it’s the things I ordered online!” she answered. I watched speechlessly as she opened them. There was no way our parents were letting her spend that much money- online or off!
“How much did all of this coat?”
“Oh, only about $15 in all!” She said excitedly. “Everything on eBay is on sale! It’s a way better than going to the mall.”
I felt as if there had been a store right in my backyard that I had never walked into! That week, I ordered a used Spanish textbook for my summer course online for 10 percent of the publishing price. A few days later, I bought an iPod protector and a book or two via the wonderful eBay.com.
1.From the first two paragraph we can conclude that the author
A.had no experience using computers |
B.had no idea of what e-commerce is |
C.only used the Internet to check e-mail |
D.thought surfing the Internet was a waste of time |
2.The writer didn’t find out about e-commerce until
A.he stopped web-surfing |
B.he visited a store in his backyard |
C.his sister explained the packages she got by mail |
D.his friends told him about the online deals they made |
3.We can infer from the last paragraph that the author .
A.never enjoyed shopping that much |
B.loves the big store in her backyard |
C.feels she is a true master of the Internet |
D.has begun to enjoy online shopping |
4.What’s the purpose of the article?
A.To tell the readers how he begins online shopping. |
B.To do business on the Internet. |
C.To make an online shopping ad. |
D.To advise people not to do online shopping |
五:补全对话(共5小题,每题1分,共5分)。
根据对话内容,从对话后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
A: Good morning. Marketing Department.
B: Well, I’m phoning about a job you advertised in the local newspaper.
A: I’m the marketing manager. 61
B: Yes, it’s Johnson.
A: Good. 62 And you are still in college?
B: Twenty-four years old. 63
A: And what’s your major at college?
B: 64 Besides, I studied English, law, accounting, computer and ten more courses.
A: 65
B: Yes, I worked in the marketing department during the summer holidays.
A: Um, I see. Could you come for an interview at 2: 15 p.m. on Wednesday, young man?
B: Yes, madam.
A: Good. See you then.
A.I graduated one year ago. |
B.Could I have your name, please? |
C.How old are you? |
D.Who is it speaking? |
E.Are you good at English?
F.Have you any experience as salesman?
G.Business administration(管理).
任务型阅读(从六个待选项中为每短话选择一个合适的标题,不必全部使用。)
Hollywood movies are regularly filled with sex and violence. They can be exciting films but sometimes all you want is a little light-hearted entertainment.
51.________ Have you heard of Bollywood? All singing, all dancing and unrealistic, it is the perfect alternative to normal Hollywood movies. Bollywood is the Indian film industry, based in Mumbai, formerly known as Bombay. Most Chinese school kids have probably never seen an Indian film. Yet Bollywood is the largest producer of films in the world. This year the Indian Filmgare Awards, Bollywood's Oscars, turn 50 years old.
52._________ The typical Bollywood movie usually has the following ingredients: a cup of romance, a tea-spoon of comedy, a dash of international sight-seeing, served with a huge slice of singing and dancing. There will also be one brave hero, one beautiful heroine and one baddie. The result is a fun-filled musical.
53._________ There is never any mention of politics, poverty or war. The actors change clothes and locations within a single song. But the audiences don’t mind. To Indian movie lovers, especially the poor, such films are a gateway to heaven and the stars are their gods. The films take them to a magical world away from their everyday troubles. The films tell them the impossible is possible and that true love conquers all.
54.__________ But, behind the beautiful scenes, Bollywood still emphasizes traditional family values. In most films, if two lovers want to break an arranged marriage, they can't just run away. They must win over their parents.
55.___________ So if you're tired of all that Hollywood actions, check out the following Bollywood films. They will take you to a brighter, cheerier and more colourful world, where it's still cool to dance around a tree and sing a love song.
A.Bollywood pays great attention to traditional values. |
B.Bollywood is lees famous than Hollywood, and yet it produce the most films in the world. |
C.Bollywood films are full of ideal things and free of daily worries. |
D.Bollywood is a decent refreshing replacement for those over-stimulating Hollywood films. |
E. Bollywood has gradually won its reputation on the world stage.
F. Bollywood films are mostly comic romances with light-hearted incidental music.