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四、Reading Comprehension(60 points)
41、 根据以下内容，回答41-60题。
The energy which the sun radiates goes in every direction, and only a minute part of it falls on the earth．Even so, it represents power of about 5,000,000 horsepower (马力) per square mile per day; the sun gives us as much energy every miunte as mankind utilizes in a year．At present, we use this energy indirectly, and it is our final source of power．Coal represents the chemical action of the sun on green plants thousands of years ago．Water power results from the rain formed by vapor which comes from the evaporation of water under the sunshine．Even windmills operate because of air currents set in motion by the different heating affects of the sun in different places．Some day, through chemistry or some type of solar engine, we shall harness this great source of energy more directly．Already a scientist has worked out an engine, surprisingly efficient, in which the sun’s rays are concentrated through mirrors on a tube of water to create steam．
How much energy given off by the sun reaches the earth?
A．100% but indirectly．
B．5%．
C．50%．
D．only a very tiny amount．


42、 The reason why all the solar energy falling on the earth can’t be utilized is that ______．
A．only a very small part is available
B．the sun is too distant from the earth
C．it takes thousands of years for this energy to be stored up in coal and oil
D．our scientific knowledge is not sufficient


43、 Which of the following statements is NOT true?
A．Even windmill’s action depends on the sun．
B．The sun produces enormous energy for man to make use of．
C．Some day man will be able to utilize 100% of the solar energy that gets to the earth．
D．The sun produces different heating effects in different places．


44、 In order to support this argument, the writer gives the example that _______．
A．a machine using solar energy efficiently has already been developed
B．the sun is our final source of power
C．man uses only a tiny part of the sun’s energy
D．the part of the sun’s energy we use is used indirectly


45、 This passage centers mainly on ________．
A．harnessing energy through chemistry
B．our last source of power
C．how water power is produced
D．the amount of solar energy that can be utilized

46、 根据以下内容，回答46-65题。
The large part which war played in English affairs in the Middle-Ages, the fact that the control of the army and navy was in the hands of those that spoke French, and the circumstances that much of English fighting was done in France all resulted in the introduction into English of a number of French military terms．The art of war has undergone such changes since the battles of Hastings, Lewes, and Agincourt that many words once common are now only in historical use．Their places have been taken by later borrowings, often like wise from French, many of them being words acquired by the French in the course of their wars in Italy during the sixteenth century．Yet we still use French words of the Middle Ages when we speak of the army and the navy, of peace, enemy, battle, soldier, guard and spy, and we have kept the names of officers such as captain and sergeant．Some of the French terms were introduced into English because they were needed to express a new object or a new idea．In other cases a French and a native English word for the same thing existed side by side．Sometimes one or the other has since been lost from the language; but sometimes both the borrowed and the native word have been still in common use．
The main idea of this passage is that ______．
A．most of today’s common English military terms dated from the sixteenth century or later
B．a study of the English vocabulary shows the important part which war has played in the history of England
C．many French words borrowed into English during the Middle Ages have since disappeared from the language
D．many military terms used in English were originally borrowed from French, some as early as the Middle Ages


47、 All of the following have something to do with the introduction into English of many French military terms except that _______．
A．war played an important part in English affairs in the Middle Ages
B．the English army and navy were controlled by those who spoke French in the war between England and France
C．France invaded England in the Middle Ages and many battles were fought in England
D．much of English fighting was done in France in the war between England and France


48、 The art of war has undergone such changes that _______．
A．we no longer use any French words of the Middle Ages
B．many words once common are not used any longer and they are replaced by Italian words
C．French military terms have disappeared from the English language
D．many words once common are now only in historical use and their places have been taken by the newly-borrowed words


49、 Which of the following is not the French word borrowed into English during the Middle Ages?
A．sergeant
B．battle
C．spy
D．fight


50、 The writer takes the words “battle” and “fight” as an example to show______．
A．French words are needed to express something new
B．a French and a native word for the same thing have been still in common use side by side
C．French word or the other has been lost from the English language
D．“battle” is the borrowed word and “fight” is the native one