第四部分：阅读理解(第31～45题，每题3分，共45分)
下面有3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题，从4个选项中选择1个最佳答案涂在答题卡相应的位置上。
31 Man has changed his physical environment with a view to__________.
A altering the physical features of the earth
B modifying the face of the planet
C improving his surroundings
D bettering his way of life
32 According to the passage, pollution of the air and water is caused by__________.
A thousands of tons of gases coming out of the exhausts of motor vehicles
B the changes of the environment that technology has brought to man
C the increasing amount of oil that has been produced
D industrial wastes discharged into rivers
33 The ecological balance of the sea is lost when
A people consume more fish than they used to
B the ecological balance of the river is lost
C large numbers of algae, fish and birds are killed
D the production of marine petroleum is increased
34 Who would most probably disagree with conservationists?
A Industrialists.
B Ecologists.
C Businessmen.
D Environmentalists.
35 The purpose of the writer is
A to reduce modern technology
B to improve man's way of life
C to warn people not to change the natural environment
D to call attention to the protection of the natural environment
36 By calling Americans marrying people the author means that__________.
A Americans are more traditional than Europeans
B Americans expect more out of marriage than Europeans
C there are more married couples in the U. S than in Europe
D more of Americans, as compared with Europeans, prefer marriage and they accept it at a younger age.
37 Divorced Americans__________.
A will most likely remarry
B prefer the way they live
C have lost faith in marriage
D are the vast majority of people in the society
38 Which of the following can be presented as the picture of today's American families?__________
A A typical American family consists of only a husband and a wife.
B Many types of family arrangements have become socially acceptable.
C Americans prefer to have more kids than before.
D There are no nuclear families any more.
39 "Part-time" children__________.
A spend some of their time with their half brothers and some of their time with their half sisters
B spend all of their time with one parent from previous marriage
C are shared between the two former spouses
D cannot stay with "full-time" children
40 Even though great changes have taken place in the structure of American families, __________.
A the functions of marriage remain unchanged
B the vast majority of Americans still have faith in marriage
C most Americans prefer a second marriage
D all of the above
41 Which of the following is NOT true of ministrokes?__________
A The cause of them remains unidentified.
B They seldom cause permanent neurological damage.
C They symptoms of them are often passing.
D They are not unrelated to major strokes.
42 To prevent ministrokes from turning into major strokes, it is important to__________.
A save thousands of lives
B avoid major disability
C seek prompt medical treatment
D prevent future injury
43 The passage indicates that the symptoms of ministrokes__________.
A are always easy to spot
B are frequently hard to recognize
C usually last a couple of days
D can by no means be avoided
44 All of the following may be signs of ministrokes EXCEPT for__________.
A trouble seeing in one eye
B numbness in the face
C loss of coordination
D severe headache caused by external injury
45 It can be inferred from the passage that ministrokes are__________.
A more dangerous than major strokes
B silent and deadly
C difficult to cure
D sure to lead to major strokes
