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.
Điền vào ô 5
A . alteration
B. alternative
C. alternation
D. alternate
Đáp án là D.
much less là một thành ngữ, nghĩa là: chưa kể đến