大学英文题目 帮忙 啦 谢谢When you read the proof that today more than t

大学英文题目 帮忙 啦 谢谢
When you read the proof that today more than two and a half million children under six years old live in houses where there is the danger of lead(铅) poisoning, it is natural to ask how and why this situation has happened, and what can be done about it.
This threat to millions of children has been growing through the years from several causes.
Forty years ago all house paint was made with some amount of lead. The addition of lead made the paint dry faster and gave a shiner and harder finish. In fact, the more lead, the better and more expensive the paint, and some paint had as much as 50 percent lead.
Medical scientists, who had known for many years that lead could be poisonous when it got into the human body, finally began too speak out against the use of lead in places where people lived, worked and played. Then, about twenty years ago the paint companies agreed to reduce the amount of lead in paint, especially that used on toys, children’s furniture and for inside walls and woodwork.
Although many—but not all—companies made an effort to reduce the use of lead, action was not quick enough to suit many public health officials and other concerned citizens. In 1970 the U.S. Congress passed the Lead-Based Paint Poisoning Prevention Act. In 1972, a law was issued that, beginning in 1973, a new paint for sale on the market could not contain more than one half of one percent lead. This did not affect the old paint, of course. Some of it was over thirty years old on the walls of millions of houses.
During the post-war years, millions of Americans decided to move to larger cities and towns, away from small towns and farms. As citizens grew, people from those cities moved out into the new suburbs. Those who could not afford to have the houses newly-painted lived in the old houses in the cities. Today, years later, the largest number of lead poisoning cases are beginning to be found in millions of older houses in the larger cities. (10 分)

1). The largest number of lead poisoning cases today is found in ______.
A. poor areas of large cities B. the countryside C. rich suburbs around cities
D. areas with newly-built houses
2). One can conclude after reading this article that ______.
A. lead is useful although expensive when used in paint
B. lead is no longer used in paint C. on one is suffering from lead poisoning now
D. lead poisoning will continue to be a problem for a long time
3). The article suggests that heavily leaded paint is ______.
A. cheap B. long lasting C. slow drying D. colorful
4). Factories began to reduce the use of lead ______.
A. after the second world war B. before 1972 C. after 1972 D. forty years ago

5). At one time paint contained ______.
A. no lead B. very little lead C. a little lead D. a lot of lead
伽蓝忆 1年前 已收到2个回答 举报

艺术人声 花朵

共回答了25个问题采纳率:92% 举报

1.A
根据“Those who could not afford to have the houses newly-painted lived in the old houses in the cities.Today,years later,the largest number of lead poisoning cases are beginning to be found in millions of older houses in the larger cities.”
2.D 仍然有人住在那些使用lead的屋子里面
3.B 用了排除法,其他三个都不对.
4.C 1972年颁布了法令
5.A

1年前

2

ch110en 幼苗

共回答了3个问题 举报

1. A
2. D
3. D
4. C
5. D

1年前

1
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