--- Why didn’t you ring me up when Sue arrived?---sorry, I my essay that was to be handed in by noon.A. had written B. wroteC. have been writing D. was writing 题目和参考答案——青夏教育精英家教网—

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--- Why didn’t you ring me up when Sue arrived?

---sorry, I ______ my essay that was to be handed in by noon.

A. had written B. wrote

C. have been writing D. was writing

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For decades，the San Francisco Bay area has been the heart of the computer technology industry．Many of the biggest technology companies have their headquarters in the area called Silicon Valley．But the area has not always been associated with charity(慈善)．

Now，a new generation of entrepreneurs(企业家)appears to be changing Silicon Valley．One example is Marc Benioff，a donor(捐赠者)，who has called on wealthy donors to give more to their communities．He also is the founder of Salesforce．com，a computer services company in San Francisco who has helped build a children’s hospital and given millions of dollars to non-profit organizations in the city．

Money from the technology industry has also started to change the face of charity．Benjamin Soskis writes about the history and ideas behind charity in America．His articles have appeared in The Atlantic magazine and a number of major publications．He says，traditionally，donors have given after they spent much of their lives building up wealth．Usually donors are in their 70s．But an increasing number of people appearing on the list of top donors are younger than 40 years of age．Benjamin Soskis says that is something new．“There’s a whole new model that’s appearing in which people give and accumulate at the same time．”

Some of the young donors on this year's top 50 list have started to change in the way people see charity．That is especially the case in the San Francisco area，where giving money and making money appear to be coming together．“I think it's fair to say that charity is now a part of the Silicon Valley identity．”

1.What is true of Marc Benioff?

A．He joined a non-profit organization．

B．He advised donors to build hospitals．

C．He made San Francisco a city of charity．

D．He set up the company of Salesforce．com．

2.What is special about the donors of Silicon Valley?

A．They prefer to give rather than make money．

B．They give after accumulating a lot of wealth．

C．They are much younger than the usual donors．

D．They donate more money to their communities．

3.Which of the following can be the best title for the text?

A．The age of charity

B．The changing faces of charity

C．In search of new faces

D．From computer base to charity centre

If Kate had known what was _______ for her, she would not have married Tom.

A. in response B. in return

C. in reaction D. in store

Here’s one number to keep in mind during your next cell phone conversation: 50. A new experiment shows that spending 50 minutes with an active phone pressed up to the ear increases activity in the brain. This brain activity probably doesn't make you smarter. When cell phones are on, they emit (发出) energy in the form of radiation that could be harmful, especially after years of cell phone usage. Scientists don't know yet whether cell phones are bad for the brain. Studies like this one are attempting to find it out.

The 47 participants in the experiment may have looked a little strange. Each one had two Samsung cell phones attached to his or her head — one on each ear. The phone on the left ear was off. The phone on the right ear played a message for 50 minutes, but the participants couldn't hear it because the sound was off.

With this set-up, the scientists could be sure they were studying brain activity from the phone itself, and not brain activity due to listening and talking during a conversation. After 50 minutes with two phones strapped to their heads, the participants were given PET scans.

The PET scan showed that the left side (the side with the phone turned off) of each participant's brain hadn't changed during the experiment. The right side of the brain, however, had used more glucose, which is a type of sugar that provides fuel to brain cells. These right-side brain cells were using almost as much glucose as the brain uses when a person is talking. This suggests that the brain cells there were active ― even without the person hearing anything. That activity, the scientists say, was probably caused by radiation from the phone.

Henry Lai, who works at the University of Washington in Seattle, is uncomfortable with the data related to cell phones. Holding a cell phone to your ear during a conversation is “not really safe,” Lai told Science News. Lai is a bioengineer at the University of Washington in Seattle. He wrote an article about the new study for a journal, but he did not work on the study. Bioengineers bring together ideas from engineering and biology.

For those who don't want to wait to find out for sure whether cell phones are bad for the brain, there are ways to talk more safely. You can have short and sweet conversations, use a speakerphone or keep the phone away from your head.

1. Which of the following statement is true?

A. Scientists are sure that cell phones are bad for the brain.

B. In the experiment, the left side of the brain used more glucose.

C. Radiation from the phone probably causes the change in the brain.

D. Henry Lai wrote a lot of articles about this new study.

2. Why weren’t the participants allowed to have a conversation on the phone during the experiment?

A. Because the scientists want to be sure of the accuracy of the experiment.

B. Because they really looked strange and no one wanted to talk to others.

C. Because they were given PET scans and they lost the ability to talk.

D. Because that would be too noisy and bad for the experiment.

3.What is glucose?

A. A type of sugar that provides vitamin to brain cells.

B. Something that the right side of the brain used.

C. A type of sugar that gives energy to brain cells.

D. Something that makes a human excited.

4. According to the last two paragraphs, which is the safest way to use a cell phone?

A. Holding the cell phone close to your head.

B. Using a cell phone more than three hours a day.

C. Taking the most powerful cell phone.

D. Keeping the cell phone at a distance.

5. Where is this article probably taken from?

A. Literature magazine. B. Science News.

C. Story books. D. Art Journal.

Wherever you prefer to work after graduation, _______ close contacts with your family members.

A. keeping B. keep C. to keep D. kept

We all can feel something unusual about Kate, but she just _________ let us know what it is.

A. shouldn’t B. mustn’t

C. needn’t D. won’t

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有多余选项。

Camping is an American tradition, and especially important for families. 1.

★Time together

Camping allows you to spend quality time as a family. Most family members are too caught up in their everyday lives to stop and spend time with each other. At home there are just too many distractions, such as televisions. 2. On a camping trip one can spend time with one’s kids and form a real relationship.

★ 3.

Another great reason to go on a camping trip is to teach kids things like respect for nature and outdoor survival skills — things that just can’t be learned adequately from books.

★Camping is cheap

4. You will save on air travel, accommodations, food, and other expenses.

★Outdoor activities

On camping trips, people don’t just stay in their tents the whole day. 5. These include bird watching, wildlife viewing, hiking, mountain climbing, fishing, swimming, and playing games with kids.

A. Camping trips are inexpensive compared to regular vacations.

B. Instead of doing activities together, they may just sit there and watch TV.

C. They can do lots of enjoyable and worthwhile activities.

D. Learning

E. Enjoying nature and relaxing

F. Here are four important reasons.

G. Activities should be colorful.

When Jeff Sparkman draws his cartoon superheroes with colored pencils, he often has to ask other people to tell him what color his masked men turned out to be because he's color-blind. Now, a new smart phone application (app) can help him figure out what colors he's using and how the picture looks to most everyone else.

The DanKam app, available for iPhone and Android for $2.99, is an application that turns the vague colors that one percent of the population with color-blindness sees into the "true" colors as everyone else sees them. In America, an estimated 32 million color-blind Americans---95% are males---can soon have their life improved.

"DanKam takes the stream of data coming in through the phone's camera and changes the colors slightly so they fall within the range that people who are color-blind see," developer Dan Kaminsky told CNET. He came up with the idea after watching the 2009 film Star Trek with a color-blind friend.

It was then that he got to know more about colorblindness like its varying types and degrees. A vast majority, for instance, have trouble seeing red or green due to a genetic defect(遗传缺陷). Blue-yellow colorblindness, however, is rarer and develops later in life because of aging, illness or head injuries, etc. He started experimenting with one of the most common representations of points in the RGB color model. What the DanKam app attempts to do is to clean up the color space of the image or video signal so that colors can be visible to those suffering from viewing problems. “You can adjust the app to fit your needs. There is a range and not everyone who is color-blind sees things the same.” Says Kaminsky.

Sparkman, a copy editor at CNET, tried out the app and was pleased with the results. "It would be useful for dressing for a job interview," he said. But using it for his art is “the most practical application." It worked well on LED and other lights on electronic gadgets, which means Sparkman can now identify the power light on his computer display as green.

1.According to the first two paragraphs, we can know that DanKam ___________.

A. appeared in the movie Star Trek

B. can turn vague colors into real ones

C. is a phone used to help drawing pictures

D. is designed to help people with colorblindness

2.How does DanKam’s app work?

A. It puts LED and other lights on electronic gadgets.

B. It changes the colors so that color-blind people can see them.

C. It checks color-blind people’s types of degrees of colorblindness.

D. It shows common representations of points in the RGB color model

3.It can be inferred from the passage that colorblindness __________.

A. cannot be cured by any methods

B. is more commonly seen in women

C. is not necessarily inborn disease

D. makes people unable to tell any colors

4.Which of the following is NOT included in the things that DanKam helps Sparkman with?

A. Choosing clothes.

B. Drawing his pictures.

C. Playing computer games

D. Handling electronic gadgets.

In today’s fiercely competitive society,； people only care about what achievements you _______, not your efforts.

A. had made B. will make C. would make D. have made

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