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对革兰阳性菌作用弱，对革兰阴性菌包括绿脓杆菌作用强的药物是E．
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Part A
Directions: Read the following three texts. Answer the questions on each text by choosing A, B, C or D. Mark your answers on ANSWER SHEET 1.
The world has developed into a world of cities. With the current rate of urban growth (3. 8% in tile Third World), the major part of the population of the world will be living in cities by the year 2000. This will transform. the rural-urban equation which has marked the history of mankind up to now and will call for new examples and a great deal of innovation to face this phenomenon.
This being so, one must accept the fact that for some years to come, no policy will be able to stop or reverse the present migratory trends from the rural areas to the cities in the Third World. In Africa, the urban population will reach 330 million people by the end of the century as against 150 million in 1986.
The number of people living in shanty towns will inevitably increase despite the efforts to improve housing conditions. Africa alone needs to build twelve million housing units between now and the year 2000 to meet its most basic needs. In an ILO study, M. S. V. Sethuraman estimates That in 70 Third World cities the proportion of people living in shanty towns varies from 15% to 70% and that about US $ 116 billion are needed to give minimum comfort to these people by the turn of the century--less than US $ 10 billion per year.
The world population is growing at a rate of about 90 million people per year, with the Third World accounting for 80 million of them. The pressure on cities can only go on increasing. The urban population of the developing countries will exceed two billion people by the year 2000 and since the main factor for the high demographic growth is poverty, the rest population will be mostly made of people of very limited means.
If the urban popluation of the developing countries exceeds 2 billion people by the year 2000, the additional people will face the problem of ______.
A．They have already existed.B．They will come into being in the future.C．They are only
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文： An advertisement says "Learn English in six weeks, or your money back". Of course, it never happens quite like that. As we know, no language is easy to learn except one's mother -tongue. And think how much practice that gets. Before the Second World War, people usually learn English in order to read English literature. Now most people want to speak English. Every year many millions of people start to learn English. How do they do it？
Some people try at home, with books and tapes, some use radio or television programmes, others go to school or attend evening classes. If they use English only two or three times a week, it will take a long time to learn it, like English learning at school. A few people try to learn English fast and study six or more hours a day. It is clearly easier to learn English in Canada, Australia or the United States. However, most people cannot afford this, and for many it is not necessary. They need English in order to do their work better. For example, most scientists and engineers chiefly need to be able to read books and reports in English. Whether English is learnt quickly or slowly, it is hard work. Good teachers, books and machines will help, but they cannot do the students' work for him.
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In a diagnostic situation ______exist side by side throughout the community.
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