Choose the word or phrase that best fits the blank space in the following passage.
Mexico City is growing quickly. In 1970, the city had about 9 million people. Now it has over 17 million. All these people are causing problems for the city. There are not (31) ______ jobs. Also, there is' not enough housing. Large families have to live together in small homes. Many homes do not have water. They also do not have bathrooms or electricity. The Mexican government is (32) ______ about all these problems. It is working hard to make life better in the city.
Why is Mexico City growing so fast? Where are all these people coming from? They are coming to the city from the country. Life is hard on the farms in Mexico. Most people on farms have to live a very simple life. They have no (33) ______money for modern things. People think life in the city must be better. So they leave their farms and move to Mexico City.
All around the world, large cities have the same problems. One of them is air (34) ______. Mexico City has bad air. It is dirty and unhealthy. Cars are one reason for the dirty air. Many Mexicans now own their own cars and drive in the city. The factories in the area also cause air pollution. These factories put a lot of (35) ______ into the air. It is not easy to clean up the air in a large city. The government has to make new laws, and everyone has to help.
(32)
A.A. worried
B.B. interested
C.C. discussed
D.D. known

Read the passage, then choose the correct answers.
No one knows the limits of population that the earth can support. Thomas Malthus, an English economist, developed a theory that became widely accepted in the nineteenth century. He suggested that because world population tended to increase more rapidly than the food supply, a continual strain was exerted upon available resources. Malthus cited wars, famines, epidemics, and other diseases as the usual limitations of population growth.
With recent advances in science and technology, including improved agricultural methods and great strides in medicine, some of the limiting factors in population growth have been lessened, with obvious results.
International organizations have put forward several recommendations to alleviate the problem of overpopulation, including an increase in food production, general economic development in target areas, and a decrease in birth rate. Most experts agree that it will be necessary to combine all three recommendations in an effort to affect a lasting solution.
Which of the following is not true according to the passage?
A.A. The earth has enough resources to support all of its population.
B.B. The theory developed by Thomas Malthus was believed by most people in the 19th century.
C.C. Medical advance has lessened some of the limiting factors in population growth.
D.D. International organizations are seeking a lasting solution to the overpopulation problem.

Read the passage, then choose the correct answers.
No one knows the limits of population that the earth can support. Thomas Malthus, an English economist, developed a theory that became widely accepted in the nineteenth century. He suggested that because world population tended to increase more rapidly than the food supply, a continual strain was exerted upon available resources. Malthus cited wars, famines, epidemics, and other diseases as the usual limitations of population growth.
With recent advances in science and technology, including improved agricultural methods and great strides in medicine, some of the limiting factors in population growth have been lessened, with obvious results.
International organizations have put forward several recommendations to alleviate the problem of overpopulation, including an increase in food production, general economic development in target areas, and a decrease in birth rate. Most experts agree that it will be necessary to combine all three recommendations in an effort to affect a lasting solution.
According to the passage, why has overpopulation been caused?
A.A. Improved technology
B.B. Disasters
C.C. Scarcity
D.D. Precaution

Read the passage, then choose the correct answers.
No one knows the limits of population that the earth can support. Thomas Malthus, an English economist, developed a theory that became widely accepted in the nineteenth century. He suggested that because world population tended to increase more rapidly than the food supply, a continual strain was exerted upon available resources. Malthus cited wars, famines, epidemics, and other diseases as the usual limitations of population growth.
With recent advances in science and technology, including improved agricultural methods and great strides in medicine, some of the limiting factors in population growth have been lessened, with obvious results.
International organizations have put forward several recommendations to alleviate the problem of overpopulation, including an increase in food production, general economic development in target areas, and a decrease in birth rate. Most experts agree that it will be necessary to combine all three recommendations in an effort to affect a lasting solution.
It was suggested by Thomas Malthus that _______.
A.A. food was in short supply because of population increase
B.B. The rapid growth of population led to an acute shortage of natural resources
C.C. Rapid population growth put a great strain on available resources
D.D. Pressures on natural resources will increase as we face a population explosion

Identify the one underlined word or phrase -A, B, C or D-that must be changed for the sentence to be correct.
Hadn't he (A) resigned (B), we would have been forced (C) to sack (D) him.
A.Hadn't he
B.resigned
C.been forced
D.to sack

Choose the one word or phrase that best completes sentences.
I _______ you sooner had someone told me you were in the hospital.
A.would have visited
B.had visited
C.visited
D.visit

Identify the one underlined word or phrase -A, B, C or D-that must be changed for the sentence to be correct.
Some scientists believe that (A) the earth has resources enough (B) to support (C) its (D) population.
A.believe that
B.resources enough
C.to support
D.its

Choose the one word or phrase that best completes sentences.
I'll give you a lift if it _______.
A.is raining
B.rained
C.will rain
D.had rained

Choose the one word or phrase that best completes sentences.
It would have been a much more serious accident _____ fast at the time.
A.was she driving
B.had she been driving
C.she had driven
D.if she drove

Choose the one word or phrase that best completes sentences.
Our school has managed to collect a lot of books to _______ to the children in a village school.
A.publish
B.distribute
C.employ
D.depart