IV:
Choose the word or phrase (A, B, C or D)) that best fits the blank space in the following passage:
We are using up the world’s petroleum. We use (11)_________ in our cars and to heat our building in winter.Farmers use petrochemicals to (12) _________ the soil rich. They use them to kill insects (13) _________ eat plants. These chemicals go (14) _________ rivers and lakes and kill the fish there. Thousands of pollutants also go into the air and pollute it. Winds carry this (15) _________ air to other countries and other continents.
Poor farmers use the same land over and (16) _________ . The land needs a rest so it will be better next year. However, the farmers must have food this year. Poor people cut down forests (17) _________ firewood. In some areas when the trees are gone, the land (18) _________ desert. Poor people can’t save the environment for the (19) _________ .
This is not a problem for one country or one area of the world. It is a problem for all- humans. The people and the nations of the world must work together to (20) _________ the world’s resources.
Trả lời câu hỏi dưới đây:
___________ (20)
Đáp án là B. preserve: bảo tồn, duy trì
Nghĩa các từ khác: recycle: tái chế ; keep someone/ something adj: giữ ….; reuse: dùng lại