题目内容

_ puzzled Li Lei a lot was _ his best friends didn’t come to school this morning．

A.
That; why
B.
That; what
C.
What; whether
D.
What; why

D
试题分析：考察名词性从句。本题第一空是由what引导的主语从句，what在句中做主语。第二空是表语从句，why在句中做原因状语。句义：让李磊很困惑的事情是为什么他的好朋友们今天上午没有来学校。故D正确。名词性从句要使用陈述语序。同时考查集中在引导词的选择上，连接词that, whether, if在句中不充当任何成分，只起连接作用；连接代词who(ever), which(ever), whom(ever),whose(ever),what(ever)在句中做主语，宾语，表语和定语；连接副词when, why, where, how，在句中做状语。应从上下句的句法关系着手分析，切不可‘望句形生答案’总的来说，考生在解答此类题型时，可用排除法，造句法或者还原法，造句法就是仿造原句的语法功能仿造出一个易懂易理解的句子，帮助判断。
考点：考察名词性从句

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_________ puzzled Li Lei a lot was _________ his best friends didn’t come to school this morning．

That; why

That; what

What; whether

What; why

Car companies are developing vehicles that will plug into electric sockets，just like many laptops，digital cameras，cell phones and Mp4 do．Called“plug-in vehicles”，these cars will get most of their power from electricity. Their drivers won't have to stop at gas stations as often as usual．
The technology is more than just cool. In our car-filled world，plug-in vehicles could reduce the amount of gas we use，which keeps rising in cost now and then. Besides，driving around in these vehicles may even help the environment．Gas-burning cars produce a lot of greenhouse gas，which causes globe warming.
The first company-produced plug-in vehicles could hit the roads by 2010. But engineers still have a lot of work to do to make the technology practical and inexpensive．
Batteries(电池) are the biggest challenge. In the plug-in-vehicle world，Li-ion(锂离子)batteries are getting the most attention．These batteries can store a large amount of energy in a small package，and they last a longer time between charges．Li-ion batteries can fit laptops，cell phones，heart instruments and other similar pocket ones.
But because cars are so big and heavy, it would still require a suitcase-sized Li-ion batteries to power about 12km of driving．What's more，the batteries are much expensive．
“A car filled with batteries could go a long distance，”says Ted Bohn, an electrical engineer in Chicago．“But it couldn't pull any people．and it would cost $100,000．”
So researchers need to work out how to make batteries smaller and cheaper，among other questions.
“The answers don't exist yet，”Bohn says，“As a kid，I thought someone someplace knows the answer to everything．All of these questions haven't been decided．That's what engineering is about-making a guess，running tests and getting fine results．”
72．The passage mainly talks about        of a new car
A．the developing    B．the speed    C．the appearance D．the batteries
72．Which is true according to the passage?
A．The“plug-in vehicles”will use electricity completely as driving power．
B．The new technology will help protect our environment．
C．The technology of using electricity as driving is quite practical now．
D．The biggest challenge of the new technology is that it will cost us more energy．
74．How does Bohn feel about the future of the technology according to the last paragraph?
A．Confident    B．Puzzled．    C．Worried． D．Disappointed．
75．According to the passage，the new technology is facing the following problems except that ．
A．the new technology cannot come into use at present
B．the cost of the new technology is quite high
C．the government won't support the technology
D． the size of the batteries is too big at present

One of my China Dialogue colleagues in Beijing recently bought a Philips energy-saving light bulb to replace a standard one．He was happy with his choice．It may have cost 30 yuan （just under US$4．50） - ten times the price of a filament （灯丝） bulb - but he wanted to save energy as part of his low-carbon lifestyle．And according to the shopkeeper, he would save, in the long run, much more than the 30 yuan he was spending．

Yet only one month later, his expensive light bulb blew up, before he had saved even a small part of the purchase price．Will he stick to his high-cost, low-carbon lifestyle?

China's environmental organizations have started to advocate low-carbon lifestyles and the decrease of carbon footprints to help fight against climate change．But they have overlooked one fact: in China, low-carbon living comes at a high cost．It means buying energy-saving bulbs and appliances, and environmentally friendly building materials and daily goods．Cost can no longer be the only standard for purchases．An energy-saving and environmentally friendly product is more expensive than a standard alternative - whether it's a simple light bulb or the house it shines．For average consumers, even buying an ordinary bulb is a huge burden．How can we persuade ordinary people to choose an energy-saving residence? This is not a trend they can afford to follow; perhaps this fashion is only for the rich．

Most consumers today do not cause huge carbon dioxide （CO₂） emissions．Their responsibility lies not in choosing a low-carbon lifestyle today, but in avoiding a high-carbon life in the future．The principle of "common but differentiated responsibility" - a basis of sustainable development - can be applied here as well．

In China, low-carbon living still is resisted by a lack of social infrastructure（基础设施）. Even if your salary allows you to make that choice, nobody is there to help you accomplish it．

Consider energy-saving homes. You need to find out whether or not the developer has used natural materials wherever possible; how effective the insulation（绝缘物、隔热物） is; and what the green credentials of installed equipment are．You can read up a little, but you'll still be lucky to avoid being puzzled by the developers' marketing．Many so-called energy-saving buildings are nothing of the sort, and some are even more energy-hungry than the average home - as Li Taige warned in his article "Energy-efficient buildings? Not always", on China Dialogue last August．

1.What may probably be the best title of this passage?

A. To purchase a cheap bulb - your wise alternative．

B. To choose an energy-saving residence - a must of your life

C. To learn a low-carbon lifestyle - each citizen's responsibility

D. To learn a low-carbon lifestyle - a promising but difficult purpose

2.Why does the writer say this fashion is only for the rich in the fourth paragraph?

A. Because the cost is a very important standard for purchases.

B. Because buying an ordinary bulb is very expensive.

C. Because energy-saving products are more expensive than the common alternatives.

D. Because rich people like to follow this trend.

3.What does the writer think of energy-saving homes?

A. Most of them are environmentally friendly.

B. They are musts of low-carbon lifestyle of Chinese.

C. They are huge burdens for Chinese people.

D. Many of them are more in name than in reality.

4.We can infer from the passage that ____．

A. Using energy-saving bulbs and appliances is a fashion．

B. It's easy for most Chinese to try to learn a low-carbon lifestyle．

C. All citizens in China don’t have the same responsibility in living a low-carbon lifestyle．

D. Most Chinese families cannot afford to purchase an energy-saving residence.

5.What is the writer's attitude towards the low-carbon lifestyle?

A. informative and entertaining B. supportive but cautious

C. negative but wise D. positive and active

李华因在学校使用手机被学校处分，他感到很困惑，写信给你求助。请根据以下提示给李华回信。所给要点必须写到外，自己可以适当补充相关细节。词数120左右（信的开头与结尾已给出，不计入总词数）

1: 手机的优点：联系方便

2: 带手机上学的问题：影响教学，花大量时间打手机有害学习和健康

Dear Li Hua,

Your letter reached me yesterday. It said in your letter that you were punished for using cellphones, which puzzled you.

Best wishes.

Yours,

Wang Ping

_______ puzzled Li Lei a lot was _______ his best friends didn’t come to school this morning．

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_ puzzled Li Lei a lot was _ his best friends didn’t come to school this morning．