2. 外语
  3. Complete the notes below. Write NO MORE THAN TWO WORDS for each answer. How to kill bad insects Chemical methods These solutions

Complete the notes below. Write NO MORE THAN TWO WORDS for each answer. How to kill bad insects Chemical methods These solutions

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问题 Complete the notes below.
Write NO MORE THAN TWO WORDS for each answer.
How to kill bad insects
Chemical methods
These solutions to insect problems often are 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 insects.
Breeding control
In order to control the breeding of insects, one needs to understand the insects’ 【L40】______
【L36】
选项
答案small scale
解析 small scale本题遵循冠词不换原则，找a后面的单数名词。原文提到：Unfortunately,chemicals can only be used in a limited area for a limited time．It’s a small scale solution．所以在听到chemical时，就要准备找答案了。
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