(B)

Lights Out at Bedtime

There are plenty of good reasons to power up a personal desktop or laptop computer in the evening — writing e-mails,chatting on social networks or making purchases over the Internet,for instance.But various studies indicate that people who stare at a PC’s bright monitor shortly before going to bed probably sleep less soundly than they would otherwise because the light seriously affects their natural wake-sleep cycle."They haven't proved it though," says Dieter Kunz,the team's director at Charite's Psychiatric Clinic in St.Hedwig's Hospital in Berlin.

Similarly,exposure to just 10 minutes of normal bathroom lighting is enough to free the sleep hormone melatonin,which regulates people's natural wake-sleep cycle and makes them sleepy at nightfall.

Ten years ago,a team of British and American researchers detected a photo-pigment(光敏色素) in the human eye that signals to the body whether it is day or night,summer or winter.The photo-pigment is especially sensitive to blue light.

"The blue light more or less tells the body,'It's daytime,be awake,'" Kunz says.Monitors have a mostly cold white light content and scientists suspect the photo-pigment may react similarly to it.So the longer people look into the bright light,the more awake they become - and then sleep poorly.

A lot of people have difficulty "switching off" in the evening.About half of the women in Germany and a quarter of the men sleep poorly.

Environmental factors are only one of the possible causes.Job stress as well as personal and health concerns are also the main reasons for their sleep problems.

In addition,electronic objects' standby lights and indicator lamps can be annoying in the dark and affect sleep."Sound scientific evidence is still lacking on this matter," Kunz notes.

According to Kunz,those who cannot go without their computer in the evening should turn down the blue content if possible and lower the brightness somewhat."But nobody does that because,after all,you want to concentrate while working at the computer and the light helps the brain."

1.The passage is mainly about ____________.

A.natural wake-up cycles

B.the effect of light on sleep

C.personal and health concerns

D.functions of computer monitors

2.The underlined word “which” in Paragraph 2 refers to_____.

A.normal bathroom lighting

B.10-minute exposure to lighting

C.the release process of a chemical

D.a chemical affecting one’s sleep cycle

3.We can learn from the passage that ______.

A.the blue light has a calming effect.

B.the photo-pigment tells people day or night

C.women in Germany use computers more often than men

D.it has been proved that standby lights affect people’s sleep

Directions: Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

A. separates B. suggest C. negative D. responsibility

E. failure F. willing G. control H. hold

I. element J. concerned

How do successful people think? What drives them? Interviews and investigations 1. that there are several keys to success that successful people share.

First of all, successful people never blame someone or something outside of themselves for their 2. to go ahead. They realize that their future lies in their own hands. They understand that they cannot 3. things in life, such as nature, the past and other people. But in the meantime, they are well aware that they can control their own thoughts and actions. They take 4._ for their life and regard this as one of the most empowering things they can do. Perhaps what most 5. successful people from others is that they live a life “on purpose” ---- they are doing what they believe they are put here to do. In their opinion, having a purpose in their life is the most important 6. that enables them to become fully functioning people. They 【小题7 that when they live their life on purpose, their main concern is to do the job right. They love what they do ---- and it shows. People want to do business with them because of their commitment (责任心). To live their life on purpose, successful people find a cause they believe in and create a business around it. Besides, they never easily give up. Once they have set up goals in their life, they are 7.to do whatever it takes to achieve their goals. Rather than seeing it 8. or upset they use the knowledge to encourage themselves on and go after what they want energetically and passionately.

Without proper planning, tourism can cause problems. For example, too many tourists can crowd public places that are also enjoyed by the inhabitants of a country. If tourists create too much traffic, the inhabitants become annoyed and unhappy. They begin to dislike tourists and to treat them impolitely. They forget how much tourism can help the country and how tourism affects them. Tourism should help a country keep the customs and beauty that attract tourists. Tourism should also advance the well-being (health and happiness) of local inhabitants.

Too much tourism can be a problem. If tourism grows too quickly, people must leave other jobs to work in the tourism industry. This means that other parts of the country’s economy can suffer.

On the other hand, if there is not enough tourism, people can lose jobs. Businesses can also lose money. It costs a great deal of money to build large hotels, airports, air terminals, first-class roads, and other support facilities needed by tourist attractions. For example, a major international-class tourism hotel can cost as much as 50 thousand dollars per room to build. If this room is not used most of the time, the owners of the hotel lose money.

Building a hotel is just a beginning. There must be many support facilities as well, including roads to get to the hotel, electricity, sewers(阴沟) to handle waste, arid water. All of these support facilities cost money. If they are not used because there are not enough tourists, jobs and money are lost.

1.Which of the following has most probably been discussed in the paragraph that goes before the passage?

A. It is extremely important to develop tourism.

B. Building roads and hotels is essential.

C. Support facilities are highly necessary.

D. Planning is of great importance to tourism.

2.Too much tourism can cause all these problems EXCEPT ______.

A. a bad impact on other industries

B. A change of tourists’ customs

C. overcrowdedness of places of interest

3.It is good for local people to be well aware that tourism will _____.

A. use up a large amount of water

B. weaken their economy

C. help establish their traditions

D. help improve their life

It was a winter morning, just a couple of weeks before Christmas 2005. While most people were warming up their cars, Trevor, my husband, had to get up early to ride his bike four kilometers away from home to work. On arrival, he parked his bike outside the back door as he usually does. After putting in 10 hours of labor, he returned to find his bike gone.

The bike, a black Kona 18 speed, was our only transport. Trevor used it to get to work, putting in 60-hour weeks to support his young family. And the bike was also used to get groceries(食品杂货),saving us from having to walk long distances from where we live.

I was so sad that someone would steal our bike that I wrote to the newspaper and told them our story. Shortly after that, several people in our area offered to help. One wonderful stranger even bought a bike, then called my husband to pick it up. Once again my husband had a way to get to and from his job. It really is an honor that a plete stranger would go out of their way for someone they have never met before.

People say that a smile can be passed from one person to another, but acts of kindness from strangers are even more so. This experience has had a spreading effect in our lives because it strengthened our faith in humanity(人性)as a whole. And it has influenced us to be more mindful of ways we, too, can share with others. No matter how big or how small, an act of kindness shows that someone cares. And the results can be everlasting.

1.Why was the bike so important to the couple?

A. The man’s job was bike racing.

B. It was their only possession.

C. It was a nice Kona 18 speed.

D. They used it for work and daily life.

2.We can infer from the text that ____________.

A. the couple worked 60 hours a week.

B. people were busy before Christmas

C. the stranger brought over the bike

D. life was hard for the young family.

3.How did people get to know the couple’s problem?

A. From radio broadcasts.

B. From a newspaper.

C. From TV news.

D. From a stranger.

4.What do the couple learn from their experience?

A. Strangers are usually of little help.

B. One should take care of their bike.

C. News reports make people famous.

D. An act of kindness can mean a lot.

Are you tired of looking for love in all the usual places? Nowadays, millions of lonely singles are now going online instead. The World Wide Web is quickly being the world’s most popular matchmaker. With so many singles online, dozens of dating sites like Yahoo Personals and Match. are helping singles find that special someone. Around the world, from America to China, love is now very much online.

Singles are flocking to the Internet mainly because their busy lifestyles leave them little time to look for a significant other. Using dating sites is quick and convenient. They can “meet” a lot more people online than they could by hanging out at a club. Besides, many singles say the regular dating scene has just led them from one bad experience to another and are ready to try something else. They also appreciate the first distance of online dating, which allows them to hide themselves until they are ready to meet someone face to face. Dating sites also make it easy to avoid someone you are not interested in. In the real world, however, ignoring some one you don’t like can be embarrassing.

Despite all the advantages, online dating also presents its own set of problems. People aren’t always who they claim to be in their online profiles. For instance, someone who tells you he is “ handsome, successful and single” might turn out to be homely, unemployed and married. Safety is another concern. You are just as likely to find a criminal online as you are Mr. or Miss Right.

Even so, supporters of online dating see things in a positive way. In their opinion, singles can safely play the online dating game with a little mon sense. Online dating experts remend following a few safety tips:

Guard you personal information. Never give out your personal information online. This includes your last name, phone number , home address and place of work.

Watch for red flags. Do any of the people your are chatting with make disrespectful ment? Do they try to control you? Do they give false information about themselves? If so, forget them!

Meet in a safe place. When meeting someone in person, choose a public location with other people around. Following these tips and you might be able to find the person of your dreams.

Title: Online dating

Phenomenon

Singles 1.__________ to look for love online.

parisons between online dating sites and

2.__________ dating scene

They can “meet” more people than they could in the 3.__________world.

The 4.__________of online dating allows them to hide themselves until they are ready to meet someone face to face.

They can avoid someone they are not interested in.

Some people are 5.__________ of the similar experiences.

You will feel 6.__________if you ignore someone you don’t like.

7.__________of online dating

Some of the information may be 8._________.

Another concern is safety.

Safety tips

Guard your personal information, 9._________your last name, phone number, home address and place of work.

Chat with the people who are honest and 10.__________.

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