Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions.

             Do you live in a big city? It is said that living in big cities is expensive because of the high living cost. There are also pollution and traffic problems that make living in big cities unpleasant. However, many people enjoy living in big cities because they offer convenience and countless options for entertainment.  

             Many big cities already have good public transportation systems, which makes it easy for the citizens to go anywhere around the city. This also reduces and helps overcome the problem of traffic jams that often occur at peak times. With the convenience of public transportation, the citizens do not have to drive everywhere and can save money as they do not have to pay for parking charges.

              Staying healthy is everybody's concern and in big cities you can find the best possible medical care for any diseases, especially the severe ones. Moreover, compared to rural areas, access to medical treatment is easier because there are always clinics or medical centers that open 24 hours in many parts of the city so you can get medical help anytime, as soon as you need it. Reaching hospitals is also easier as public transport is usually available 24 hours a day.

1. What is the passage mainly about?

A. Advantages of living in big cities             B. Disadvantages of living in big cities

C. Drawbacks of living rural areas                D. Benefits of living rural areas

2. Which of the following is closest in meaning to the word "countless" in paragraph 1?

A. definite            B. numberless            C. measurable              D. limited

3. What makes living in big cities costly?

A. public transport         B. healthcare         C. high cost of living        D. high parking charges

4. According to the passage, what is people's concern?

A. traffic congestions        B. air pollution           C. medical centers           D. good health

5. It can be inferred from the passage that in big cities

A. no one cares about the high cost of living.

B. it's impossible to get medical care for severe diseases.

C. traffic jams are often seen during rush hours.

D. city dwellers do not have to pay for parking.