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题型:阅读理解-单选 难度:0.65 引用次数:335 题号:1026537
What is color? Why do some of the things around us look red, some green, others blue?
Colors are really made by deflected (反射) light. We see color because most of the things reflect light. In the same way, if something is green, it reflects most of the green light. If something reflects all light, it is white. If it doesn’t reflect any light, it is black.
Some of the light is reflected and some is taken in (吸引) and turned into (变成) heat (热能).The darker the color is, the less light is reflected, the more light is taken in. So dark-colored clothes are warmer in the sun than light-colored clothes.
1. When something reflects light, we can _____.
A.see its colorB.see its heatC.not see its colorD.see nothing
2. Something looks white because it reflects _____.
A.some lightB.no lightC.all lightD.most light
3. the dark-colored clothes are warm because ____ is taken in.
A.more lightB.less lightC.more colorD.less color
4. In summer ______ make people feel cool.
A.dark-colored clothesB.red-colored clothes
C.green-colored clothesD.light-colored clothes
5. What’s the best title(标题)of this passage( 短文 )?
A.Dark colorB.ColorC.HeatD.Clothes

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【推荐1】Every day we use money to buy what we want. But have you ever really noticed the bill (钞票) in your hand? There are different pictures on both sides of banknotes (纸币) and interesting stories behind them.
Most banknotes have famous people on the front, such as a country’s leader or a great scientist, while on the back of the paper note there are usually some well-known scenes or national buildings.
The latest editions of Chinese banknotes use the picture of Mao Zedong, founding father of the People’s Republic of China, on the front of all yuan bills. However, the backs of the bills are different. The Great Hall of the People, on the 100-yuan note, is a landmark (地标) in Beijing. Important meetings are always held there. The Lijiang River in Guilin, on the 20-yuan note, is one of the most beautiful scenes in the world.
The US 1-dollar bill has the first president, George Washington, on the front side. A 13-level pyramid is on the back. Benjamin Franklin, a great scientist and politician (政治家) from the US, appears on the front of the 100-dollar bill. You can see the White House, where the presidents live, on the back of the 20-dollar bill.
1. According to Paragraph 2, which one probably appears on the back of the banknotes?
A.Abraham Lincoln.B.Elizabeth II.
C.Taishan Mountain.D.Titanic.
2. The Lijiang River of Guilin is __________.
A.on the back of 20-yuan noteB.on the front of 20-yuan note
C.on the front of 100-yuan noteD.on the back of 100-yuan note
3. On the front of the 100-dollar bill, we can see __________.
A.George WashingtonB.Benjamin Franklin
C.a 13-level pyramidD.the White House
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【推荐2】Soon computers and other machines will be able to remember you by looking at your eyes! The program works because everyone’s eyes are different. So in the future you won’t have to remember a number when you want to use a machine or take money out of a bank. You’ll just have to look at the machine and it will be able to tell who you are.

The eye-recognition (眼睛识别) program has already been tested in shops and banks in the USA, Britain, Spain, Italy and Turkey. Soon this technology (技术) will take the place of all other ways of finding out who people are.

However, scientists are also working on other systems (系统). Machines will soon be able to know you from the shape of your face or hand or even your smell! We already have machines that can tell who you are from your voice or the mark made by your finger.

Eye-recognition is better than other kinds because your eyes don’t change as you get older, or get dirty like hands or fingers. And even twins have different eyes. So the eye-recognition program can be up to 94% correct, depending on how good the technology is. However, some other programs may only be 51% correct at present. In Britain, it was found that 91% of people who had tried it said that they liked the idea of eye-recognition.

In the future your computer will be looking at you in the eye. So smile!

1. How does the eye-recognition program work?
A.You write your number.B.You show your ID card.
C.You say your name.D.You look at the machine.
2. How many ways will machines be able to know you soon?
A.One.B.Two.C.Three.D.Five.
3. Why can the program be up to 94% correct?
A.Because eyes never change.B.Because hands or fingers can get dirty.
C.Because people like the idea of the program.D.Because the program is widely used around the world.
4. Which of the following is TRUE?
A.The program is being tested in Japan.
B.Machines with other systems can also tell who you are.
C.91% of people like the idea of the program.
D.Computers can remember you by looking at your clothes.
5. What does this passage mainly talk about?
A.Introduction to some kinds of programs.
B.Introduction to the eye-recognition program.
C.The way how the eye-recognition program works.
D.The places where the eye-recognition program is tested.
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【推荐3】Welcome to the new Hong Kong Sleeping Bus Tour that helps you catch up on sleep.

The bus tour is a five-hour ride around Hong Kong on a double-decker (双层) bus. The bus stops at places like the city’s Lantau Island and the airport, where passengers can get off and take photos.

So how did the idea of the tour grow? “When we were trying to develop new tours, I saw a post from my friend saying that he was stressed out by his work, and that he couldn’t sleep at night,” said Kenneth Kong, the organizer of the bus tour. “But when he was traveling on the bus, he could sleep well. His post inspired (赋予灵感) us to create this tour.”

Tickets for the first Sleeping Bus Tour quickly sold out, and for $13 to $51 a ticket, riders can choose seats on the upper or lower deck.

Some passengers came prepared, bringing their own blankets and changing their shoes to slippers, while others brought travel pillows (枕头). Passengers were also given an eye mask and earplugs for a more comfortable sleep.

Dr. Shirley Li, who researches sleep at the University of Hong Kong, said, “People in Hong Kong don’t have enough time to sleep. They may tend to connect public transport with their sleep. And that’s why they found it easier to fall asleep on the bus.”

1. We can infer that Kenneth Kong’s friend ________.
A.felt relaxed at workB.had no trouble sleeping at night
C.gave advice on creating the bus tourD.wrote a post and inspired Kenneth Kong
2. From Paragraph 4, we know the bus tour is ________.
A.popularB.terribleC.tiringD.important
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A.B.C.D.
4. According to the text, Hong Kong sleeping bus tour ________.
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5. The text is written to ________.
A.show the importance of sleeping
B.introduce a new and special bus tour
C.encourage people to solve the sleeping problems
D.tell us why people in Hong Kong like the bus tour
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