Cantreestalk?Yes,notinwords.Scientistshavereasonstobeli...

问题详情：

Can trees talk? Yes, not in words. Scientists have reasons to believe that trees do communicate ___26___ each other.

Not long ago, researchers ___27___(learn) some surprising things. First a willow tree ___28___(attack) in the woods by caterpillars(毛虫) changed the chemistry of its leaves and made them taste so terrible that they got tired of the leaves ___29___(gradual) and stopped eating them. Then even more ___30___(astonish), the tree sent out a special smell-a signal causing ___31___ neighbors to change the chemistry of their own leaves and make them less tasty.

Communication, of course, doesn’t need to be in words. We can talk to each other by smiling• raiding our shoulders and moving our hands.___32___ we know is that birds and animals use a whole vocabulary of songs, sounds, and movements. Bees dance their signals. ___33___(fly) in certain patterns that tell other bees where ___34___ (find) nectar(花蜜) for honey. So why shouldn’t trees have ___35___(way) of sending messages?

【回答】

26. with   

27. learned   

28. attacked   

29. gradually   

30. astonishing   

31. its    32. What   

33. flying    34. to find   

35. ways

知识点：语法填空

题型：未分类