How to kill bad insects

文章大意

讲座从昆虫生物学入门讲起，先介绍蜜蜂、蝴蝶等益虫通过授粉帮助植物结果，蜜蜂还产蜂蜜和蜂蜡；蜻蜓捕食蚊子。接着讲蚊子、苍蝇等害虫，蚊子曾传播疟疾和黄热病，并提到非洲采采蝇。

题目与答案

1. Bees that help with pillination benefit flowers and certain types of 31_____ .

   答案：trees

   原文定位：Bees help plants in the process of pollination and thus are necessary to most flowers and fruit-producing trees

   同义替换：「benefit」↔「are necessary to」

2. Bees produce was that can be made into candles and 32_____ .

   答案：furniture polish

   原文定位：Moreover, they produce beeswax, which is useful in candles and is also used as a first-rate furniture polish

   同义替换：「made into」↔「useful in」

3. Dragonflies primarily eat 33_____ .

   答案：mosquitoes

   原文定位：Dragonflies mainly eat mosquitoes and also a few other insects

   同义替换：「primarily」↔「mainly」

4. Insects in summer can be harmful because they can carry such deadly diseases as malaria, 34_____ and sleeping sickness.

   答案：yellow fever

   原文定位：Some were even deadly. They carried malaria and yellow fever

5. Harmful insects may destroy crops, furniture, and even the 35_____ .

   答案：whole building

   原文定位：If they are not stopped, they can eventually destroy the whole building

6. Chemical method for killing bad insects

   These solutions to insect problems are often not worthwhile because:

   · They are effective on a 36_____ .

   答案：small-scale

   原文定位：Unfortunately, chemicals can only be used in a limited area for a limited time. It's a small-scale solution

   同义替换：「effective」↔「solution」

7. · They can bring harm to 37_____ .

   答案：humans

   原文定位：It's no secret that chemicals remain harmful to humans

8. · Insects become 38_____ to the chemicals quickly.

   答案：resistant

   原文定位：They then breed with the other survivors, and just like that, insects become resistant to most poison in a few generations

   同义替换：「chemicals」↔「poison」

9. Biological methods

   · These methods are 39_____ than chemical methods of eliminating harmful insects.

   答案：cheaper

   原文定位：This is a cheaper alternative to chemicals

10. Breeding control method

    · In order to control the breeding of insects, one needs to understand the insects` 40_____ .

    答案：life cycle

    原文定位：It's clear that we must have an understanding of the life cycle of the insect