6．Flies are buzzing．Most people think they are dirty and annoying．But in Bryan Lessard's eyes，flies are beautiful insects with great abilities．
Lessard is a researcher at Australia's CSIRO．He is an expert on flies．According to Lessard，more than 159，000 types of flies have been found around the world．The number forms 10-15 percent of all the known animals on Earth!
Shocked？The truth is that you can never get away from flies，Lessard says．If you are a chocolate lover，you really should thank flies．Because there would be no chocolate without them!
A tiny kind of fly is the only known pollinator （授粉者） of the flower of the cocoa plant．These special flies are native to countries that are rich in cocoa，such as Brazil and Ecuador．They play a great role in the world's big sales of chocolates．Flies，as well as some other insects，also pollinate Australia's tea trees．Flies are a huge driver of the economy，but we take them for granted．
Flies can also be useful in other cool ways．Take black soldier flies for example．Scientists in Australia，India and US are turning black soldier fly larvae （幼虫） into a nutritious feed for livestock（家畜）．The larvae are 45 percent protein．They find that chickens fed on the larvae grow larger，and don't experience any harmful side effects．As well as that，Chinese researchers from Wuhan's Huazhong Agricultural University have made oil from the black soldier fly larvae and turned the liquid into a form of biodiesel （生物柴油）．So someday our cars could be powered by flies!
32．According to Lessard，fliesA．
A．are useful to humans
B．are buzzing insects
C．love to eat chocolate
D．are the largest insect group
33．Why should chocolate lovers thank flies？B
A．They protect cocoa plants．
B．They pollinate cocoa plants．
C．They protect tea trees．
D．They pollinate tea trees．
34．Who made biodiesel from black soldier fly larvae？D
A．Scientists from Australia．
B．Scientists from India．
C．Scientists from US．
D．Scientists from China．
35．Scientists found that black soldier fly larvaeA．
A．can be a great feed for livestock．
B．can cause harmful side effect．
C．can help chickens grow healthily．
D．can produce oil to power a car．
分析 这是一篇社会文化类阅读，作者首先引用Lessard的观点：苍蝇对人们还是有用处的，并举例说明有些苍蝇是唯一已知的可可植物的授粉者，有些是家畜的营养饲料，更有中国科学家从蝇幼虫中获取了油并把这种液体转变成一种生物柴油．充分说明了苍蝇对我们的用处．
解答 32．A 推理判断题．根据文中第一段中的But in Bryan Lessard's eyes，flies are beautiful insects with great abilities．以及第三段中If you are a chocolate lover，you really should thank flies．可得在Lessard眼中，苍蝇是有着很多功能的美丽的昆虫，比如巧克力的制作就离不开它．可知：苍蝇对人们还是有用处的，故选A．
33．B 细节理解题．根据文中第四段中的A tiny kind of fly is the only known pollinator （授粉者） of the flower of the cocoa plant．可得这种小型的苍蝇是唯一已知的可可植物的授粉者，再结合题中选项，故选B．
34．D 细节理解题．根据文中最后一段中的Chinese researchers from Wuhan's Huazhong Agricultural University have made oil from the black soldier fly larvae and turned the liquid into a form of biodiesel （生物柴油）．可得，中国武汉的华中农业大学的研究人员从蝇幼虫中获取了油并把这种液体转变成一种生物柴油．故选D．
35．A 推理判断题．根据文中最后一段中的Scientists in Australia，India and US are turning black soldier fly larvae （幼虫） into a nutritious feed for livestock（家畜）．可得来自澳大利亚，印度和美国的科学家把蝇幼虫变成了家畜的营养饲料，所以可知蝇幼虫是家畜的很好的饲料，故选A．
点评 这是一篇社会文化类阅读，题目涉及多到细节理解题，做题时结合原文和题目有针对性找出相关语句进行仔细分析，结合选项选出正确答案．推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案．
