阅读理解

阅读下面短文，从每题所给四个选项中选出最佳答案。

A Battery's Worst Nightmare(噩梦)

　　Portable electronics that can be carried about easily are only as good as their batteries and, let's face it, batteries aren't very good, especially when compared with, say, petrol, which packs 100 times a battery's energy into an equal space. That's why a large group of mechanical engineers(centered at the Massachusetts Institute of Technology, but with partners at other universities and companies) are hard at work in an effort to replace batteries with a tiny engine that runs on fuel. Imagine a battery－free life! W hen the fuel runs out in your laptop or mobilephone, you just fill up and go.

　　The engine, about the size of a ten－cent coin, starts with a combustion chamber(燃烧室)that burns hydrogen(氢). Its tiny parts are etched onto silicon wafers(硅片) in the same manner that computer parts are imprinted onto integrated circuits(集成电路). The first engine is made up of five wafers. And since these wafers could be produced in much the same way as computer chips, they could probably be produced quite cheaply.

　　But the devil in all this nice detail is efficiency(效率). Tiny engine parts don't always behave like their scaled－up parts of the first engine. Something between the parts can slow down the works, according to Columbia University professor Luc Frechette, one of the engine's designers. Extreme heat from the combustion chamber is also a problem, often leaking to other parts of the engine.

　　The scientists' goal is to create an engine that will operate at 10 percent efficiency－that is, 10 times better than batteries operate. Frechette says that a complete system, with all parts of place and working, will be set up in the next couple of years, but commercial models aren't like until at least the end of the next ten years.

1．According to the passage, the title suggests that ________.

[　　]

A．batteries should be greatly improved

B．petrol will be used instead of batteries

C．the time of batteries will be gone forever

D．pollution caused by batteries must be solved

2．What's the meaning of the underlined word “devil” in paragraph 3?

[　　]

3．What can we infer from the passage?

[　　]

A．The new invention doesn't need any fuel.

B．The new engine has been produced in quantity.

C．The new invention is much cheaper than the battery.

D．The new engine needs to be improved before it's on sale.

4．What is the main purpose of this passage?

[　　]

A．To introduce a new invention to readers.

B．To persuade readers not to use batteries.

C．To show us how the new invention works.

D．To declare when the engine will be on sale.

完成句子（共10小题，每小题1.5分，共15分）

71. He is fifteen, and is admitted to Peking University, 　　　　　　(也一样) his cousin sister. (so)

72. I have never dreamed of　　　　　　　　　　　　　　　　　　　(会有这样的机会) to study abroad free. (there)      

73. Today, we’ll discuss a number of cases                              (有些学生不能) to use the language properly. (fail)

74. 　　　　　　　　　　　　　　　　(随着时间的流逝), many occasions－birthdays, awards, graduations－were marked with Dad’s flowers. (as)

75. 　　　　　　　　　　　(无论你说什么)makes no difference to me. I won’t change my mind to go to Shanghai Expo although it’s crowded there. (say)

76. So difficult　　　　　　　　　　　　(我发现解决) the problem that I decided to ask Tom for advice. (work)

77. I supported him in time, otherwise he　　　　　　　　　　(会摔下来) the bike. (fall)

78. By the time you come here, I　　　　　　　　　　　　　(已经去) Beijing. (go)

79. Tim, you’re looking for Mary? She             (肯定去了) to the library. (must)

80. It was not until she had arrived home　　　　　　　　　　　(她记起) the appointment with the doctor. (remember)

翻译句子 (共4小题, 每小题2.5分, 满分10分)

根据所给的中文和括号内的语法提示, 把下面句子翻译成英语,写在答题卷相应的横线上。

71. 实话告诉你, 我被人家取笑是很尴尬的。(it作主语）

To tell you the truth，                                                        .

72. 如果我把黑色照相机和白色照相机做过比较，就不会选择那台黑色的了。（虚拟语气）

If I                        the black camera with the white,                                                                                

             　　　　　　　  .

73. 找到了问题所在, 公交车司机向乘客道歉, 由于他让大家等了这么久。 (名词从句)

Finding                                       ，the bus driver said sorry to the passengers for __________________________________________________________________.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

74. 直到废除奴隶制的时候， 他才意识到黑人将得到彻底的解放。（被动语态）

Not until the slavery was got rid of                                                                              

                                                                              .

完成句子（共10小题，每小题1.5分，共15分）

71. He is fifteen, and is admitted to Peking University, 　　　　　　(也一样) his cousin sister. (so)

72. I have never dreamed of　　　　　　　　　　　　　　　　　　　(会有这样的机会) to study abroad free. (there)      

73. Today, we’ll discuss a number of cases                              (有些学生不能) to use the language properly. (fail)

74. 　　　　　　　　　　　　　　　　(随着时间的流逝), many occasions－birthdays, awards, graduations－were marked with Dad’s flowers. (as)

75. 　　　　　　　　　　　(无论你说什么)makes no difference to me. I won’t change my mind to go to Shanghai Expo although it’s crowded there. (say)

76. So difficult　　　　　　　　　　　　(我发现解决) the problem that I decided to ask Tom for advice. (work)

77. I supported him in time, otherwise he　　　　　　　　　　(会摔下来) the bike. (fall)

78. By the time you come here, I　　　　　　　　　　　　　(已经去) Beijing. (go)

79. Tim, you’re looking for Mary? She             (肯定去了) to the library. (must)

80. It was not until she had arrived home　　　　　　　　　　　(她记起) the appointment with the doctor. (remember)