Complete the notes below.Write NO MORE THAN TWO WORDS for each answer.How to k

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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】______ [br] 【L37】

选项

答案 humans

解析 humans本题原文中提到像DDT这种化学制品对环境会产生危害，随后提到常使用化学制品的农村地区也是世界上肝癌的高发病区。由此可见，化学制品除了对环境造成了影响，对人类身体也产生了危害。对应原文为：It’s no secret that the chemicals remain harmful to humans．只是该题题干形式稍微有所变化，但是bring harm to一词组与原文remain harmful to相匹配。如此答案就一目了然了，只是别忘了填写复数形式。

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