57、It can be concluded from the first paragraph.that__________ .

　　A.the author is against eating frogs

　　B.taste is illogical and inarguable

　　C.some types of frogs are poisonous

　　D.taste is influenced by many factors

　　58、The tribal people in India don’t eat snakes because__________ .

　　A.they are very dangerous

　　B.they are respected by Indians

　　C.they may spread disease

　　D.they help kill rats

　　59、The tribal people in India may not eat the following animals EXCEPT__________ .

　　A.donkeys

　　B.tigers

　　C.female deer

　　D.house rats

　　60、The passage is probably written for the purpose of__________ .

　　A.introducing the eating habit of Indian tribal people

　　B.distinguishing different types of taste.

　　C.accounting for people’s different choices of taste

　　D.explaining the relationship between taste and tribes