39 What is the main idea of this passage?
(A)the disappearance of food supply
(B)the importance of environmental protection
(C)the misuse of pesticides
(D)the threats of parasites

 In recent years, the sudden disappearance of bees has concerned scientists. When many bees are absent from the earth, this will have a great impact on people’s life because many kinds of food such as fruits, vegetables, meats, milk, and eggs will be gone with bees.

As a result, many scientists have already found out the reasons why many bees are vanishing from the earth. Some of these causes include climate change and serious food shortages for bees. But a major risk is the use of pesticides that can make bees become puzzled, bring less pollen花粉 home, and even unable to find their way home.

In some of the worst cases, pesticides can harm bees’ immune systems and make them endangered by the threats of parasites寄生生物.In order to save the bees and protect our environment, some people have already gone organic by not using pesticides when planting flowers, vegetables, and fruits. And to our great delight欣喜；滿足；愜意, scientists have also discovered the way to kill those parasites that are deadly to bees. Despite these great efforts made to save the bees, it is still the increasing awareness意識 of environmental protection that can eventually protect our bees from disappearing.

misuse翻譯：錯用，誤用；濫用；盜用, 錯用，誤用；濫用；盜用。

補充：poll翻譯：民意測驗，民意調查, 選舉, 獲得（若干選票）, 觀點

近几年来，蜜蜂突然失踪引起了科学家们的关注。当许多蜜蜂离开地球时，这将对人们的生活产生很大的影响，因为许多种类的食物，如水果、蔬菜、肉类、牛奶和鸡蛋将与蜜蜂一起消失了。因此，许多科学家已经发现了许多蜜蜂从地球上消失的原因。其中的一些原因包括气候变化和蜜蜂严重的食物短缺。但一个主要的风险是使用农药，可以使蜜蜂变得困惑，带来更少的花粉回家，甚至无法找到他们回家的路。在一些最坏的情况下，杀虫剂会伤害蜜蜂的免疫系统，并使它们受到寄生虫的威胁而灭绝。为了拯救蜜蜂和保护我们的环境，一些人已经去了有机的不使用农药时种植花卉，蔬菜和水果。我们非常高兴的是，科学家们还发现了杀死那些对蜜蜂是致命的寄生虫的方法。尽管这些巨大的努力，以拯救蜜蜂，它仍然是越来越多的环保意识，最终可以保护我们的蜜蜂消失。