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语言朋友(82)__1__are very useful to man, for example, bees, from which we get__2__and wax, and silkworms, which__3__us with silk.Other varieties, however, are extremely__4__， and do a great__5__of damage, especially to crops.Locusts are perhaps the most__6__of all， for they will eat almost any green__7____8__on cultivated land they soon leave it__9__.In some countries they are the farmers'__10__enemy.Another nuisance is the common __11__ , not only because it __12__ us indoors and outofdoors, but because it spreads diseases. Scientists have given much time and __13____14__ observation. Thanks __15__ their discoveries we now know almost all __16__ is to be known about the habits of these hardworking insects, bees and ants, which live in __17__better planned in some ways than our __18__.But the most valuable work has been done in trying to give__19__ to men, animals and crops from the__20__which insects cause. 解题导语：地球上的生物很多昆虫是种类最丰富的它们有的对人类有益但大部分是对人类有害的。研究昆虫对人类与自然和谐相处具有非常重要的意义。解析：根据下文的“other varieties are harmful”可知选D。答案：D解析：我们可以从蜜蜂身上得到蜂蜜。honey “蜂蜜”。答案：B解析：supply sb.with sth.“给某人提供、供应某物”。答案：D解析：根据上文的“are very useful”可知选A。句意：但其他种类的昆虫对人类是非常有害的。答案：A解析：a great amount of 后接不可数名词表示“大量的”。答案：C解析：上文指出许多昆虫对人类有害此句指蝗虫也许是威胁最大的一种昆虫。答案：B解析：green plant“绿色作物”。答案：D解析：settle用作不及物动词时表示“停留安居”等。答案：A解析：句意：当几百万的蝗虫停留在农耕地时植物都会被吃光了。答案：A解析：蝗虫的危害如此之大所以有些国家把它们当作农民最大的敌人。故选B。答案：B解析：根据下文提到屋里屋外都有还传播疾病所以这种昆虫可能是苍蝇。故选C。答案：C解析：根据常识可知屋里屋外飞来飞去的苍蝇是令人很烦恼的。答案：C解析：give thought to“关心想到”。答案：D解析：句意：研究昆虫需要最细致和最耐心的观察。答案：B解thanks to为固定搭配意为“幸亏多亏”。答案：CA.that | 
