Whyispinkorpurpleacolorforgirl-优题课

Eating different colored foods can keep you healthy, as well as change your mood and behavior. Here is a list of colors, which can change your life.
Blue/Purple
Blue is considered to be peaceful and calming and it has the same effect on our health. The blue / purple color in food is due primarily to their anthocyanins which are antioxidants (抗氧化剂) that are particularly heart healthy and may help support healthy blood pressure. Out of all the blue and purple foods available, blueberries are considered to have the highest antioxidant level. An analysis of the latest data from the National Health and Nutrition Examination Study found that people who eat purple and blue fruits and vegetables are at a reduced risk for high blood pressure and are less likely to be overweight.
A food and health expert says that blue and purple color foods can prevent blood mass formation, and they also lower the risk of cancer.
Foods that contain blue and purple colors are: reddish eggplant (especially the skin), blueberries, blackberries, purple grapes, etc.
Green
We all know that we should eat green as green symbolizes nature. The green foods are rich in isothiocyanates, which help resist cancer.
Dr. Ashok Agarwal, a food and nutrition specialist, explains, "They are excellent sources of folic acid, vitamin K, as well as carotene （胡萝卜素）. Diets high in those above are associated with lowered blood pressure."
Foods that contain the green color are: broccoli, cabbage, cucumbers, etc.
Red
Lycopene (番茄红素) in reddish fruits and vegetables is a powerful antioxidant that has been associated with a reduced risk of some cancers, and also provides protection against heart attacks.
Dr. Smiths says, "Cooked tomato sauces are associated with greater health benefits as compared with the uncooked version as the heating process allows lycopene to be more easily absorbed by the body. Obtaining the most benefit from food depends on proper selection, storage and cooking of the produce."
Foods that contain red color are: Tomatoes and tomato products, watermelon, guava, red onions, red chili, red apples, red grapes, cherries, etc.
Orange
The orange foods are also rich in carotene, which are particularly good antioxidants. These foods are commonly considered eyesight foods because they contain vitamin A.
"Orange fruits and vegetables also play a part in preventing cancer, particularly of the lungs and stomach. Foods that contain the color orange are: Carrots, mangoes, sweet potatoes, pumpkins, etc.
The passage tries to tell us that ______.

A．colors mean a lot to people and their health

B．foods of different colors will have different benefits

C．eating foods with a color must prevent diseases

D．what people should eat in their daily lives

All the colors mentioned in the passage have the function of ______.

A．lowering blood pressure

B．improving eyesight

C．preventing cancer

D．reducing the risk of heart disease

Which color can help keep us thin according to the passage?

A．Purple.	B．Green.
C．Red.	D．Orange.

The green and orange foods are both rich in _______.

A．vitamin A	B．folic acid
C．carotene	D．vitamin K

It can be inferred from the passage that _______.

A．all grapes help lower the risk of high blood pressure and cancer

B．lung cancer can be prevented by eating red-colored foods

C．green-colored foods contain a lot of vitamin A which is good for eye health

D．tomatoes should be eaten cooked so that we can benefit the most

More and more people take part in marathons these days – over 30,000 people will run the London Marathon this weekend, for instance. But it’s not just the 26 miles and 385 yards that could be a daunting prospect. “I have to admit to being completely frustrated by the blocking and for 18-19 miles was just keeping away from people and being held up,” one participant grumbled after the 2012 London Marathon. “I had to overtake a lot of people and ended up with bruised（淤肿的）forearms from all the elbows,” said another.
How do such crowding problems arise, and could they be reduced? Some researchers believe that we can find the answers through a more familiar system in which jams appear – road traffic flow. Martin Treiber, of the Technical University of Dresden in Germany, has previously developed models for traffic flow. One of the first attempts to model traffic flow was made in the 1950s by James Lighthill and his collaborator Gerard Whitham of Manchester University. They considered the traffic as a kind of liquid flowing down a pipe, and looked at how the flow changes as the fluid gets denser(浓稠). At first the flow rate increases as the density increases, since you simply get more stuff through in the same period of time. But if the density becomes too high, there’s a risk of jams, and the flow rate drops sharply.
Treiber’s model of a marathon uses this same principle that the flow rate first increases and then decreases as the density of runners increases, thanks to an sudden switch from free to crowded flow. He assumes that there is a range of different preferred speeds for different runners, which each maintains throughout the race. With just these factors, Treiber can calculate the flow rate of runners, knowing the “carrying capacity”(承载能力)at each point on the route.
This allows Treiber to figure out how blocking might depend on the race conditions – for example, for different starting procedures. Some marathons start by letting all the runners set off at once (which means those at the back have to wait until those in front have moved forward). Others assign runners to various groups according to ability, and let them start in a series of waves.
Treiber has applied the model to the annual Rennsteig half-marathon in central Germany, which attracts around 6,000 participants. The traditional route had to be changed in 2013, because the police were no longer willing to close a road to ensure that runners could cross safely. It could pass either over a 60m wooden bridge or through a tunnel. Treiber used his model to predict the likely blocking caused in the various options. The model predicted that a mass start would risk an overload of runners if the bridge were to be used. Only by moving the starting point further back from the bridge could the danger be avoided – and even then, if some of the numbers assumed in the model were only slightly inaccurate, there was still a risk of jams at the bridge. On the other hand, no dangerous blocking seemed likely for the tunnel route. The run organizers consulted Treiber’s team, and eventually chose this option.
What is the worst thing while running a marathon?

A．The long distance.

B．Too many participants.

C．The dangerous blocking.

D．Serious injuries in forearms.

Which of the following statements is true?

A．James Lighthill is the first expert trying to model traffic flow.

B．The denser the flow is, the faster the flow rate becomes.

C．The flow rate increases in the beginning because fewer people passed together.

D．The flow rate increases first and then decreases later when the flow is too denser.

What is NOT true about the Rennsteig?

A．It has much less participants than the London Marathon in 2014.

B．It has a shorter distance than the London Marathon.

C．The route was changed because the traditional one is not safe any longer.

D．The participants running this marathon will pass a tunnel because this choice is safer.

What’s the main idea of the passage?

A．Make a comparison between marathon and road traffic.

B．Running a marathon is somewhat dangerous if it is not well organized.

C．Introduce a new technology to solve the blocking problem in marathon.

D．Some advice for people who are to run a marathon.

How cool can libraries be in an era（时代）of iPods and Kindles? More than you think．Only if you know where to go．
Central Library: Seattle, Washington, United States
The Central Library in Seattle is modern and fashionable and has tourists from around the world paying visits and taking tours．It was designed by Dutch architect Rem Koolhaas and American designer Joshua Ramus．Tours began in 2006, two years after its opening．The library holds various art exhibitions, book signings and other events, while visitors can stop by the Chocolate cart for a coffee and scan through the gift shop anytime
Trinity College Library: Dublin, Ireland
The Trinity College Library in Dublin is the oldest library in Ireland, founded in 1592 by Queen Elizabeth I．It is the largest single library in the world, also known as the Long Room, which contains more than 200,000 0fthe library's oldest books．The Long Room houses one of the oldest harps（竖琴） in Ireland．Dating to the 15th century, the old harp is the model for the symbol foreland．
Geisel Library, University of California: San Diego, United States
At first glance, it looks like a spaceship．Architect William Pereira, who helped design actual space launch facilities at Cape Canaveral in Houston, Texas, designed the library in 1970．It has been featured in sci-fi films, short stories and novels．The library hosts "Dinner in the Library," which invites readers for cocktails, and also a special speech from distinguished authors．
TU Delft Library: The Netherlands
The library at the Delft University of Technology was constructed in 1997 and has more than 862,000 books, 16,000 magazine subscriptions and its own museum．The building itself exists beneath the ground, so you can't really see the actual Library．What makes it interesting is the roof, which is a grassy hill．The roof covers 5,500 square meters．And it has become one of the most striking and greenest structures in the area．
Which of the four libraries has the longest history?

A．Central Library．

B．Geisel Library．

C．Trinity College Library．

D．TU Delft Library．

What makes Geisel Library different from the others is that

A．famous writers often deliver speeches there

B．it has a reoffer grassy hill

C．Queen Elizabeth I founded the library

D．it is the largest single library in the world

In Central Library, you can

A．buy souvenirs	B．enjoy sci-fi films
C．drink cocktails	D．see the old harp

When us teenager Jake Olson isn’t playing football or golf for his high school, he’s often offering inspiration through his new book about his own life.
These activities might be too much for the average 16-year-old to deal with, but Jake is blind. When people ask him how he can possibly play golf without being able to see the ball, he says he is thankful for his father’s guidance.
It seems apparent that his early experience playing sports as a person with sight and muscle memory— repeating behaviors over and over until they become second nature — have also enabled Jake to hit the ball quite well.
Jake was born with a rare kind of eye cancer that took away the vision from his left eye when he was an infant and eventually his right eye, in 2009, when he was 12 years old. Rather than letting the disease hold him back, Jake used his loss of sight and his faith as sources of motivation .
“If I was going to sit on the couch all day feeling sorry for myself, I wasn’t going to do anything. I decided right then and there that I wasn’t going to let it stop me and that I was going to go out and persevere (坚持不懈),” he said.
It was with that mind-set that the student from Orange Lutheran High School in California was able to write his first book, Open Your Eyes: 10 Uncommon Lessons to Discover a Happier Life. “It’s about opening the readers’ eyes to their true potential in life and making sure that they use all the abilities that they have,” Jake said.
Jake’s father, Brian Olson, said the family is impressed with what he has done with his life, including showing people that they can get through hardships. “Your darkest hour can soon become your brightest, and with every setback, there’s a setup,” Jake said. “In every one of us, there’s more potential than we can ever imagine, and it really is a choice.”
We can learn from the article that Jake Olson ______.

A．was born a blind child

B．could have been a golf master

C．has great muscle memory

D．is trying to find the cure for his disease

According to the article, Jake’s family members ______.

A．pity him deeply

B．once gave up hope on him

C．encouraged him to write the book

D．admire his efforts and determination

The purpose of the book Open Your Eyes: 10 Uncommon Lessons to Discover a Happier Life is to ______.

A．promote good approaches to getting along with disabled people

B．inspire people to discover and use their hidden abilities

C．help people come up with better life goals

D．explain different definitions of “a happier life”

The underlined word “setback” is closest in meaning to ______.

A．fight	B．failure
C．opportunity	D．success

Owning a smart phone may not be as smart as you think. They may let you surf the Internet, listen to music and snap photos wherever you are… but they also turn you into a workaholic, it seems.
A study suggests that, by giving you access to emails at all times, the all-singing, all-dancing mobile phone adds as much as two hours to your working day. Researchers found that Britons work an additional 460 hours a year on average as they are able to respond to emails on their mobiles.
The study by technology retailer Pixmania reveals the average UK working day is between 9 and 10 hours, but a further two hours is spent responding to or sending work emails, or making work calls. More than 90 percent of office workers have an email-enabled phone, with a third accessing them more than 20 times a day. Almost one in ten admits spending up to three hours outside their normal working day checking work emails. Some workers confess they are on call almost 24 hours a day, with nine out of ten saying they take work emails and calls outside their normal working hours. The average time for first checking emails is between 6 am and 7 am, with more than a third checking their first email in this period, and a quarter checking them between 11 pm and midnight.
Ghadi Hobeika, marketing director of Pixmania, said, “The ability to access literally millions of apps, keep in contact via social networks and take photos and video as well as text and call has made smart phones invaluable for many people. However, there are drawbacks. Many companies expect their employees to be on call 24 hours a day, seven days a week, and smart phones mean that people literally cannot get away from work. The more constantly in contact we become, the more is expected of us in a work capacity.”
What can we conclude from the text?

A．All that glitters is not gold.

B．Every coin has two sides.

C．It never rains but pours.

D．It’s no good crying over spilt milk.

The underlined word “accessing” in the third paragraph can be replaced by .

A．calling	B．reaching
C．getting	D．using

Which of the following is true according to the text?

A．The average UK working day is between nine and twelve hours.

B．Nine-tenths spend over three hours checking work emails.

C．One fourth check their first mails between 11 pm and midnight.

D．The average time for first checking emails is between 6 am and 8 am.

What’s the main idea of the text?

A．Workaholics like smart phones.

B．Smart phones bring about extra work.

C．Smart phones make our live easier.

D．Employers don’t like smart phones.

A．cultural values	B．commercial purposes
C．personal experiences	D．physical reactions to the color

A．Colors and Human Beings.	B．The Cultural Meaning of Color.
C．Colors and Personal Experiences.	D．The Meaning and Function of Color.