Read the following passage, and mark the letter (A, B, C or D) on your answer sheet to indicate the correct word (s) for each of the blanks.
From the seeds themselves to the machinery, fertilizers and pesticides –The Green Revolution regimen depends heavily on technology. One (4)_____, however , depends much(5)_________on technology – organic farming . Many organic farmers use machinery, but (6)_____chemical fertilizers or pesticides .(7)______chemical soil enriches , they use animal manure and plant part not used as food – natural , organic fertilizers that are clearly a renewable (8)_____.Organic farmers also use alternatives (9)_____pesticides ; for example they many rely on natural predators of certain insect pets.(10)___ the need arises ; they can buy the eggs and larvae of these natural predators and introduce them into their crop fields . They use(11)_____techniques to control pests as well , like planting certain crops together because one crop repels the other’s pests . Organic farmers do not need a lot of land ; (12)_____, organic farming is perfectly (13)_____to small farm and is relatively inexpensive .Finally , many organic farmers’ average yields compare favorably with other farmers’ yields.
Trả lời câu hỏi dưới đây:
__________(8)
Đáp án là B. a renewable source: nguồn có thể tái tạo
Nghĩa các từ khác: substance: vật chất; matter : vấn đề; resource: tài nguyên