题目内容

—I just can’t believe that Ella the cat has left me forever.

— ______ and cry. Don’t hold it in.

A. Don’t worry B. Go ahead

C. Forget it D. Help yourself

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When computer servers operate a complex program, they can get very hot. Cooling the servers can be costly. So researchers asked what would happen if the heat created by the servers could be captured and used?

Data centers of large Internet companies such as Google and Microsoft have thousands of computer servers. As these servers process information, they create large amounts of heat, so they need huge cooling systems, which send the heat into the air.

The Dutch company Nerdalize thinks paying for electricity to operate the servers and then paying again to cool them is a waste of energy. So it developed a device called the e-Radiator, a computer server that also works as a heating source.

Boaz Leupe, the chief executive officer of Nerdalize, says the e-Radiator saves money because companies don’t have to pay to cool their servers. “…The kilowatt hour you are using is used twice — once to heat the home and once to compute the client’s task without the cooling expenses.”

At present five homeowners in the Netherlands are testing the heating device in their homes.

“We compensate the electricity the server uses, and that we can do because of the computer clients on the other side, and, in that way, homeowners actually get heating for free, and computer users don’t have to pay for the expenses of the data center.”

Jan Visser is one of the participants in the year-long experiment. He notices that the amount of heat produced by the e-Radiator depends on the work being done by the computer server. He reveals it cannot be used as the primary source of heat. But he is ready to try it. “If it provides enough warmth, I will be able to use my home’s heating system less, which will save me money.” he added.

Nerdalize says e-Radiators create heat temperatures of up to 55 degrees Celsius. It’s also said that the devices could save users up to $440 in heating costs a year.

1.What can we learn from this passage?

A. E-Radiator can save homeowners a big sum of money in cooling the computers.

B. Google and Nerdalize developed the heating device, e-Radiator.

C. E-Radiator has been put into use in the Netherlands.

D. The heating device will benefit computer users as well as homeowners.

2.According to the passage, what’s Jan Visser’s attitude towards e-Radiator?

A. Cautious. B. Positive. C. Satisfied. D. Doubtful.

3.Where can we most probably read the passage?

A. In an economic report.

B. In a science magazine.

C. In an education newspaper.

D. In a computer guide book.

4.Which of the following can be the best title for the passage?

A. Money-saving heating device.

B. E-Radiator, the primary source of heat.

C. Hot computers could be used to heat home.

D. Nerdalize developed e-Radiator, a heating system.

It is reported that more than half of ________ surveyed on the website say they are content with their current life.

A. whom B. them C. ones D. those

书面表达

假设你是李华，你所在的学校英文报刊向全体高三学生征稿，主题是“环境保护”，你有意参加此次活动。请根据下列要点完成一篇英语作文。

1、 低碳(low-carbon)生活对我们的好处。

2、 日常生活，我们可以做些什么(如居家，出行，在校或购物等时候)。

注意：1. 词数100左右。

2. 可以适当增减细节，以使行文连贯。

3. 文中不得透露个人姓名和学校名称。

The idea of being able to walk on water has long interested humans greatly. Sadly, biological facts prevent us ever accomplishing such a thing without artificial aid--we simply weigh too much, and all our mass pushes down through our relatively small feet, resulting in a lot of pressure that makes us sink.

However, several types of animals can walk on water. One of the most interesting is the common basilisk. Basilicus, a lizard (蜥蜴) native to Central and South America. It can run across water for a distance of several meters, avoiding getting wet by rapidly hitting the water's surface with its feet. The lizard will take as many as 20 steps per second to keep moving forward. For humans to do this, we'd need huge feet that we could bring up to our ears in order to create adequate "hitting. “

But fortunately there is an alternative: cornflour. By adding enough of this common thickening agent to water (and it does take a lot), you can create a "non-Newtonian" liquid that doesn't behave like normal water. Now, if the surface of the water is hit hard enough, particles(微粒) in the water group together for a moment to make the surface hard. Move quickly enough and put enough force into each step, and you really can walk across the surface of an adequately thick liquid of cornflour.

Fun though all this may sound, it's still rather messy and better read about in theory than carried out in practice, if you must do it, then keep the water wings handy in case you start to sink--and take a shower afterward!

1.Walking on water hasn't become a reality mainly because humans _______.

A. are not interested in it

B. have biological limitations

C. have not invented proper tools

D. are afraid to make an attempt

2.What do we know about Basilicus from the passage?

A. It is light enough to walk on water.

B. Its huge feet enable it to stay above water.

C. It can run across water at a certain speed.

D. Its unique skin keeps it from getting wet in water

3. What is the function of the cornflour according to the passage?

A. To create a thick liquid.

B. To turn the water into solid.

C. To help the liquid behave normally.

D. To enable the water to move rapidly.

4.What is the author's attitude toward the idea of humans' walking on water?

A. It is risky but beneficial.

B. It is interesting and worth trying.

C. It is crazy and cannot become a reality.

D. It is impractical though theoretically possible.

What good news! Such a successful gene ______ in pigs that it enables the pigs to produce human serum albumin, a protein made by the liver. Look! Here ________.

A. have they modified…they come.

B. did they modify…come they

C. they have modified…are coming they

D. they modify…they are coming

Dolphins(海豚) live in a dark underwater world. It’s often impossible to see each other or anything else around them, so sound plays an important role in their survival. To communicate with each other, dolphins produce all kinds of sounds.

Only other dolphins understand what the sounds mean. Scientists haven’t uncovered their secret communication, except for one kind of whistle. It might last less than a second, but this whistle is a big deal. Why? Because these whistles are actually names of dolphins - and every dolphin has one. Scientists call these sounds a “signature whistle.” When other dolphins hear the whistle, they know which dolphin is calling.

Dolphins often hunt by themselves but still need to stay connected to the group. Since they can’t always see each other, dolphins use their signature whistles to check in with other dolphins hundreds of yards away. “In coastal areas, dolphins exchange whistles even when they’re a third of a mile apart,” says Greg Campbell, who studies animals. That means dolphins shout out to group members that might be nearly five football fields away.

What’s amazing is who names the baby dolphin. Not the mother. Not an auntie dolphin or another group member. Scientists believe the baby dolphin itself comes up with the signature whistle. Like human babies, a baby dolphin plays with sounds throughout its first year. While testing its sound skills, a baby dolphin is doing something amazing. It’s creating or figuring out its signature whistle. How or why it chooses its signature whistle is not clear. Studies show that most of the time the signature whistle is nothing like its mother’s or group members’ whistles.

When the baby dolphin is about a year old, its signature whistle is set. It repeats it often so the other dolphins learn to recognize it.

Deciphering(破译) dolphin names is just the beginning of figuring out what dolphins communicate about. Do they chat about sharks? Discuss the tides? Maybe they even have a name for people. Someday scientists are to decipher the rest of dolphins’ communication.

1.Sound is important for dolphins because of ______.

A．their poor sense of direction

B．their living environment

C．their strong enemies

D．their big groups

2.The dolphin’s signature whistle ______.

A．lasts along time

B．can travel long distances

C．is especially helpful in hunting

D．can be recognized by other animals

3.The author writes the text mainly to _____.

A．encourage readers to study dolphins

B．tell readers how dolphins communicate

C．show how lovely and clever dolphins are

D．introduce a special sound made by dolphins

4.A baby dolphin gets its name ______.

A．soon after it was born B．according to its size

C．all by itself D．with the help of its group

单句翻译（根据括号内要求，并使用所给词的正确形式翻译句子）

1.这个主题公园有一部分模拟的是古代中国的生活(场景)。 (be modelled after)

2.学校建议学生们在寒假接近大自然并进行锻炼。 (get close to)

3.我们接触说法语的环境越多，我们就会更好地学习法语。 (expose…to)

4.当时是困难时期，别的一切都不说，我们财政上也有问题。(apart from; financial)

5.Gustave Eiffel 对他修建铁塔的计划满怀热情，而这座塔使他闻名于世。 (construct; iron tower)

We didn't know his telephone number, otherwise we _________ him.

A. would have telephoned B. must have telephoned

C. would telephone D. had telephoned

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