We are using up the world’s petroleum(1). We use (1) _______ in our cars and to heat our building in winter. Farmers use petrochemicals to make the soil(2) rich. They use them to kill insects (2) _______ eat plants. These chemicals(3) go into rivers and lakes and kill the fish there. Thousands of pollutants also go into the air and pollute it. Winds carry this (3) _______ air to other countries and other continents. Poor farmers use the same land over and over. The land needs a rest, so it will be better next year. However, the farmers must have food this year. In some areas when the trees are gone, the land (4) _______ desert(4). The people and the nations of the world must work together to (5) _______ the world’s resources(5).
Vocabulary
(1) petroleum: xăng dầu
(2) soil: đất
(3) chemicals: hóa chất
(4) desert: sa mạc
(5) resources: tài nguyên
Question 1:
A. it
B. them
C. that
D. those
Đáp án: A. it
Giải thích: “It” thay thế cho danh từ “petroleum”
Question 2:
A. what
B. who
C. whom
D. which
Đáp án: D. which
Giải thích: Mệnh đề quan hệ “which” thay thế cho “insects”
Question 3:
A. pollute
B. polluting
C. polluted
D. pollution
Đáp án: C. polluted
Giải thích: Sử dụng tính từ “polluted” bổ sung cho danh từ “air”
Question 4:
A. gets
B. changes
C. turns
D. becomes
Đáp án: D. becomes
Giải thích: Ở một số vùng đất, cây cối chết đi, đất sẽ trở thành sa
Question 5:
A. recycle
B. preserve
C. keep
D. reuse
Đáp án: B. preserve
Giải thích: Preserve resources: Bảo tồn tài nguyên