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How to Kill Bad Insects Chemical Methods These solutions to insect problems are often not worthwhile because: a) They are effect
How to Kill Bad Insects Chemical Methods These solutions to insect problems are often not worthwhile because: a) They are effect
admin
2022-09-09
39
问题
How to Kill Bad Insects
Chemical Methods
These solutions to insect problems are often not worthwhile because:
a) They are effective on a【L36】________.
b) They can bring harm to【L37】________.
c) Insects become【L38】________to the chemicals quickly.
Biological Methods
These Methods are【L39】________than chemical methods of eliminating harmful insects.
Breeding Control Methods
In order to control the breeding of insects, one needs to understand the insects’【L40】________.
【L36】
选项
答案
small scale/small-scale
解析
本题询问这些防治害虫的方法并不十分有效的原因。录音中指出,这些化学药品只能在特定时间和特定区域使用(in a limited area for a limited time),因此它是一个小规模的解决方案(a small-scale solution),也就是说只在小规模中有效,故空格处填入small scale/small-scale。
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