Câu hỏi:

Choose the correct option A, B, c, or D for each gap in the passage.

Question 3

Choose the correct option A, B, c, or D for each gap in the passage.

Question 5

Choose the correct option A, B, c, or D for each gap in the passage.

Question 4

Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.

Question 6

Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.

Seventy percent of people in Viet Nam live in rural areas. Most of these people (1)……. their living by caring for farm animals like pigs. Other common jobs are crop fanning and fishing. For many of these farmers and fishermen, animal and plant waste is still a problem.

Many women and children cook meals using traditional cooking fuels. They also spend many hours (2)………wood and other materials to burn. This process takes time and also uses a lot of natural resources. Moreover, they suffer the same health (3)……... Cooking was a difficult and dangerous job. The kitchen was smoky, and the black ash would make people cough, and (4)………. pain in the eyes.

But a biogas system can (5)………all of these problems! It can turn animal or plant waste (6)…….valuable resources - such as cooking fuel, electricity and plant fertilizer. First, an expert must build a system of pipes and tanks. This biogas system contains and manages the decaying process of animal or plant waste. To use the biogas system, a fanner must move animal waste into a pipe with water. These pipes bring the waste to a tank (7)……..in the ground. This tank is called a bio-digester. Air cannot enter this tank. In this contained environment, natural bacteria decays the waste material. (8)……..the waste decays in the bio-digester, it (9)…….two things - biogas and slurry. The biogas rises to the top of the tank. The pressure from the gas pushes the liquid slurry into (10)……. Now people can use both the biogas and the slurry.

Question 1

Choose the correct option A, B, c, or D for each gap in the passage.

Question 2

Choose the correct option A, B, c, or D for each gap in the passage.

Homelessness is a problem in many big cities in the world. It occurs when a part of the population does not have any (1)__________ place to call home. Hundreds of millions of people in the world spend at least some time of the year homeless. This is an issue that the authorities are trying to (2)__________. However, there are (3)__________ things that each person can do to help those people. One of the things that you can do to help the homeless is to volunteer your time. If you have a lot of free time, you might go on an extended trip to help (4)__________ homes or improve an impoverished area. Even with just a few hours a week, it is possible to make an impact in your own city. You can also sign up to help at a (5)__________ soup kitchen: most cities have a mission of some kind helping food to the homeless and offering temporary shelter.

Question 1