阅读理解

　　Metals usually occur (发生,出现) in nature as minerals(矿石). At present, about 80 different metals are known to man. But with so many metals to choose from the question arises: which metal shall we use? Is there any metal that is “best for everything”? Of course not. For example, iron is strong but it rusts easily, while gold, one of the first metals found by man, does not rust at all. Should we use gold, therefore, to build fences? Imagine the cost of a fence made of gold! It’s important to consider the cost and the supply (提供)of a metal. Also, when we choose a metal for a certain job, we examine its physical properties. Is it strong enough to be used as a support for a bridge? Can it he used in a telephone to conduct (传导) electncity? Is it light enough to be used in an air plane wing? Can it he drawn out to make a fine wire? We also examine its chemical properties. Will it resist acid (酸) ? Is it too active to use? Is it easy to combine [ (使)结合] with other elements? Each use must be studied carefully. Then we can choose the right kind of metal, or combinations(结合)of metals.

　　The metals used for constructing buildings, cars, planes and ships must he strong and easy to form by casing, machining, and cutting. These metals are called structural(生锈)metals. The two most important structural (结构的) metals are iron (steel) and aluminum. Aluminum, which is much lighter than iron, has made possible the modem aviation (航空) industry.

　　Very few of the metal things we use in industry and every day life are made of a single pure metal. Most of them are combinations of metals called alloys (合金). Alloys are formed when two or more metals are melted together and allowed to cool and harden. It has been known for a long time that when some metals are combined in this way, the alloy takes on new physical properties (性质). The use of alloy makes it possible to manufacture (制造) many articles which must have special properties. Nowadays, if an inventor cannot find a metal that suits his purpose, he tries to have a new alloy made that will. The search for new alloys is going on all the time.

1．Metals are usually ________.

[　　]

A．best for everything

B．made use of in daily life in pure forms

C．found in nature as minerals

D．in the same quality

2．________ According to the text, uses of metals depend on their ________.

[　　]

3．The properties most important to a structural are its ________.

[　　]

A．lightness and activity

B．electric conductivity and heat conductivity

C．strength and easiness of shaping

D．resistance to acids and capability of being bent

4．A combination of two or more metals is called ________.

[　　]

5．The characteristic of alloy is ________.

[　　]

A．new chemical properties

B．new physical properties

C．special ways of formation

D．rarity

阅读下列短文，从每题所给的四个选项中选出最佳选项。

　　Looking back on my childhood，I get to believe that naturalists are born and not made．Although we were all brought up in the same way，my brothers and sisters soon threw away their pressed flowers and insects．Unlike them，I had no ear for music and languages．I was not an early reader and I could not do mental arithmetic．

　　Before War I we spent summer holidays in Hungary．I have only the unclear memory of the house we lived in，of my room and my toys．Nor do l recall clearly the large family of grandparents，aunts，uncles and cousins who gathered next door．But I do have a clear memory of the dogs，the farm animals，the local birds and，above all，the insects．

　　I am a naturalist，not a scientist．I have a strong love of the natural World，and my enthusiasm（热情）has led me into varied investigations（调查）．I love discussing my favorite topics and enjoy burning the midnight oil while reading about other people's observations and discoveries．Then something happens that brings these observations together in my conscious mind．Suddenly you wonder you see the answer to the riddle（谜），because it all seems to fit together．This has resulted in my publishing 300 papers and books， which some might honour with the title of scientific research．

　　But curiosity（好奇心），a keen eye，a good memory and enjoyment of the animal and plant world do not make a scientist；one of the outstanding（杰出的）qualities required is self-discipline，a quality I lack（缺乏）．A scientist requires not only self-discipline but hard training， determination and a goal．A scientist，up to a point，can be made．A naturalist is born．If you can combine（联合）the two，you get the best of both worlds．

1．The first paragraph tells us that the author ________．

[　　]

A．was born to a naturalist's family

B．lost his hearing when he was a child

C．didn't like his brothers and sisters

D．was interested in flowers and insects

2．The author can't remember his relatives clearly because ________．

[　　]

A．he didn't live very long with them

B．he was fully busy observing nature

C．he was too young when he lived with them

D．the family was extremely large

3．It can be inferred from the passage that the author was ________．

[　　]

A．no more than a born naturalist

B．a naturalist but not a scientist

C．a scientist as well as a naturalist

D．first of all a scientist

4．The author says that he is a naturalist rather than a scientist probably because he thinks he ________．

[　　]

A．lacks some of the qualities required of a scientist

B．has a great deal of trouble doing mental arithmetic

C．just reads about other people's observations and discoveries

D．comes up with solutions in a most natural way

Eco-travel is a form of travel that c_______ (使联合)normal tourism  with learning.

假设你是王明。近日，英语协会与校学生会联合发起了“强健身体，从我做起”的活动。作为学生会主席，请你就此写一封英文倡议书发表在校报英文版上，号召大家锻炼身体，保持健康。
要点如下：
1．强健的身体使我们精力充沛，并能抵御疾病；
2．充分利用不同的时间做运动；
3．参加不同形式的体育活动并且坚持下去。
注意：1.词数：120～150；
2．可适当增加细节，以使行文连贯；
3．开头和结尾已给出，不计入总词数。
Dear fellow students，
_____________________________________________________________________
___________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
____________________________________________________________________
_____________________________________________________________________
____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
____________________________________________________________________
_____________________________________________________________________
Wang  Ming
The Students’ Union

Electricity, like clean water, is a resource that’s often taken for granted. But last summer, when blackouts struck much of the northeastern US, Ontario and Rome, consumers on two continents were given a painful reminder of just how easily broken electricity supplies can be. The massive disorder stranded (使陷入困境)commuters, stopped freezers, shut down businesses and refocused attention on where most of the planet’s power comes from：oil-and-gas-fired generators and nuclear plants, These sources not only pollute the environment but also make many consumers feel unacceptable health risks.

Companies are trying to offer an alternative, clean energy from renewable resources that’s plentiful and portable. Lifton’s Medis Technologies, as well as companies like Hydrogenics and Nanosys, is tapping into fuel cells and dolor panels to give people power whenever and wherever they want it, free from dependence on local grids(电网).

The search for alternative energy is nothing new, but the current trend of innovators is focusing on the goal of making clean and sustainable power a mainstream commodity. For example, the fuel cell, which produces electricity from the chemical reaction between oxygen and hydrogen, has been around for about 150 years, though its commercial development did not begin until the 1960s and then only as part of NASA spacecraft. Today this technology is coming down to Earth in places like Tokyo; in nine European cities, from Stockholm to Porto, each operating three hydrogen-fuel-cell buses; and in Iceland, which is trying to create the first fuel free hydrogen economy by 2030.

When hydrogen and oxygen molecules(分子)combine, the reaction produces heat and water. Fuel cells use this reaction to generate electricity. With the cell phone and gadget(小机件)market in mind, Medis has developed a fuel cell with cheap components that produces little heat and effortlessly reduces waste water without turning to energy consuming pumps.

What is the passage mainly about?

A．The future of alternative energy

B．How the fuel cells works

C．People’s search for alternative energy

D．The damage done by the blackout last summer.

What can we know about the fuel cell?

A．Its commercial use began in the 1960s.

B．Today it’s being used in almost every corner of the world.

C．It has been in widespread used for about 150 years.

D．It supplies electricity to make the combination of oxygen and hydrogen possible.

Which of the following statements is NOT true according to the passage?

A．Lifton’s Medis Technologies is tapping into fuel cells and solar panels.

B．The fuel cell has been around for about 150 years.

C．The fuel cell’s commercial development did not begin until the 1960s.

D．When hydrogen and oxygen molecules combine, the reaction produces o2 and H2O.

The underlined word “blackouts” in the 1 st paragraph means_____.

A．power failure                 B．the delivering of electricity

C．the power of electricity         D．power station