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推荐文章：王长喜大学英语四级考前预测真题
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（本试卷仅作为自身水平检测，不含政策性预测）[URL=http://www3.sinoexam.cn:8808/zxcs4/test4.htm]王长喜大学英语四级考前预测真题八套【特别推荐】[/URL]
peated out-breaks. An outbreak which was to lead to surprising developments was onethat happened in Cuba during the Spanish-American War.
As
a result, an army group under Major Walter Reed was sent there inJune, 1900 with orders "to give special attention to questions concerningthe cause and prevention of yellow fever". In a daring group of experimentsusing human beings, Major Reed proved the truth of an idea advanced in 1881by a Cuban doctor, that the city type of mosquito passed on the disease.
The successful result of these experiments gave birth to another andstill more important idea: kill off the city type of mosquitoes and therewill be no more yellow fever. Fortunately these mosquitoes are one of theeasiest types to destroy. They are born in pools of quiet, warm water,within a short distance to people's home.
So to Havana came a General with orders from the United States Govern-ment to dry up these pools. He carried out his task so well that the mos-quitoes disappeared. With them went yellow fever, never to return to Havana.A few years later the same General successfully repeated this operation inPanama and in this way made possible the building of the Panama Canal. Itall seemed so simple. End the mosquitoes: end the disease. Man even beganto dream of getting rid of yellow fever from the world.
Meanwhile one question still remained unanswered. The city type of mosquitoes carried the fever, without doubt, but how? After many experi-ments, a member of the United States Army Yellow Fever Commission decidedthat the disease must be carried by something too small to be seen. Ofhis own free will, this devoted scientist decided to allow himself to bebitten by an infected mosquito. Then, taking some of his infected blood,he injected it into three other members of the group who wanted to help.Two of the three got yellow fever -- and recovered. This showed that thedisease was carried by a virus (2???) too small to be seen through the
microscopes of the day.
76. Yellow fever is found mainly around _______.
A) the Atlantic Ocean B) Any warm ocean
C
) the Americas D) Any warm country
77. The outbreak which stirred the interest of the US Army was in _______.
A) Cuba B) Spain
C) Panama D) the United States
78. One of the reasons that yellow fever was defeated was that _______.
A) some people were willing to sacrifice themselves for others
B) doctors were well trained
C) orders of the army had to be carried out at any cost
D) public feeling was strong against the disease
79. When the doctors found that blood samples could carry the disease,
they examined them with microscopes and saw _______.
A) nothing B) virus
C) germs D) different signs of disease
80. The building of the Panama Canal was made possible by _______.
A) the success of the Spanish-American War
B) the work of the United States Army
C) the killing of mosquitoes nearby
D) development of special drugs
Questions 81 to 85 are based on the following passage:
It's never easy to admit you are in the wrong. Being human, we allneed to know the art of apologizing. Look back with honesty and think howoften you've judged roughly, said unkind things, pushed yourself ahead atthe expense of a friend. Then count the occasions when you indicatedclearly and truly that you were sorry. A bit frightening, isn't it? Frightening because some deep wisdom in us knows that when even a smallwrong has been committed, some mysterious moral feeling is disturbed; andit stays out of balance until fault is acknowledged and regret expressed.
I remember a doctor friend, the late Clarence Lieb, telling me abouta man who came to him with a variety of signs: headaches, insomnia andstomach trouble. No physical cause could be found. Finally Dr. Lieb saidto the man, "Unless you tell me what's worrying you, I can't help you."
After some hesitation, the man confessed that, as
executor of hisfather's will (ò???), he had been cheating his brother, who lived abroad,of his inheritance. Then and there the wise old doctor made the man writeto his brother asking forgiveness and enclosing a cheque as the firststep in restoring their good relation. He then went with him to the mailbox in the corridor. As the letter disappeared, the man burst into tears."Thank you,"he said,"I think I'm cured."And he was.
A heartfelt apology can not only heal a damaged relationship but alsomake it stronger. If you can think of someone who deserves an apology fromyou, someone you have wronged, or judged too roughly, or just neglected,do some-thing about it right now.
81. When we have done something wrong, we should_______.
A) look honest and think over the fault carefully
B) escape from being disturbed
C) admit the fault and express the regret
D) forgive ourselves
82. What will happen if we have done something wrong?
A) Our logic of thinking will be disturbed.
B) We shall be sad.
C) We shall apologize at once.
D) Our moral balance will be disturbed.
83. What exactly was the patient's trouble?
A) The losing of a friend.
B) headaches, insomnia, and stomaches.
C) Something wrong with his conscience.
D) Some unknown physical weakness.
84. What had the patient done to his brother?
A) He had sent his brother abroad.
B) He had been dishonest to his brother.
C) He had given just a little share of the inheritance to his brother.
D) He had been too busy to write to his brother.
85. The patient was cured by_______.
A) writing a letter
B) crossing a cheque
C) asking his brother to forgive him
D) mailing a letter
Questions 86 to 90 are based on the following passage:
In 1791 the French nation, in the midst of a revolution, wished to breakwith the past, especially with th
ose aspects of it which they consideredillogical and useless. One of those was the traditional system of weightsand measures in use. Not only was the system overtly complicated, but italso varied widely from place to place.
In constructing the new system, the French began by setting up a unitof distance equal to one forty-millionth part of the earth's circumference(?2?ü). Unfortunately, later measurements showed that the unit designed wasnot exactly that fraction, but they continued to use it. (Today the unit isdefined simply as the distance between two marks on a platinumiridium (2??e)bar kept in a suburb of Paris). The unit is the meter, and the system ofmeasurements based on this unit is the metric system, the system today usedby scientists the world over.
The metric system is built in units of ten, Greek prefixes showingmultiples and Latin prefixes showing fractions. The Greeks had no word for anumber larger than ten thousand and the Romans had none for a number largerthan one thousand, but the system was extended by using less specific words;for instance megameter (one million meters) is derived from a Greek word thatmeans simply"large".
86. The French constructed a new system of weights and measures because
_______.
A) their system did not conform to other nations' systems
B) they were in the midst of a revolution
C) simplifying the old system proved difficult
D) they wished to break with the past
87. The selection says that the traditional system of measurements in France
_______.
A) varied widely from place to place
B) was useless
C) was based on a complicated logic
D) both A and B
88. The new system was to b上一页 [1] [2] [3] [4] 下一页 |
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