B
题意:渔民和海豚之间合作的正确顺序是什么?
a.海豚在渔民面前抬起背来,告诉他们撒网。
b.当海豚发现鱼时,它们会把鱼赶到海岸。
c.渔民撒网。
d.海豚在网中移动,为自己取一些。
根据第四段1-2行:Once the fish are caught in the nets, dolphins can move in and get some for themselves. (一旦鱼被渔网捕获,海豚就会游过来为自己取一些。)
以及第五段2-4行:When dolphins find fish, they drive them to the coast. Then they raise their backs in front of the fishermen to tell them to throw nets. Fishermen will then throw the nets right away, or they may lose the best chance. (当海豚发现鱼时,它们会把鱼赶到海岸。然后他们在渔民面前抬起背,告诉他们撒网。渔民们会立刻撒网,否则他们可能会失去最好的机会。)
可知首先是b.当海豚发现鱼时,它们会把鱼赶到海岸。然后是a.海豚在渔民面前抬起背来,告诉他们撒网。接着是c.渔民撒网。最后是d.海豚在网中移动,为自己取一些。
顺序为b-a-c-d,故选B。