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  • 更新 2022-09-03
  • 科目 英语
  • 题型 完型填空
  • 难度 中等
  • 浏览 1209

The Japanese Macaca monkey has been studied in the wild for over 50 years. In 1952, on one small Japanese island, scientists dropped some   26  in the dirt for the monkeys. The monkeys liked their taste, but they found the dirt   27  .
One clever 18-month-old monkey found she could   28   the problem by washing the sweet potatoes in a nearby river. She taught this to her mother. Her   29   also learned this new way and they taught their mothers, too.
All the younger monkeys   30   learned to wash the dirty sweet potatoes to make them   31   to eat. But many old monkeys found it very hard to learn this and still ate the   32   sweet potatoes.
Then something very surprising   33  . In the autumn of 1958, scientists found that the monkeys on other nearby   34   began washing their sweet potatoes too. Scientists still don’t fully understand how this knowledge was   35   from one island to another.

A.sweet potatoes B.green plants C.hard stones D.fresh nuts

A.beautiful B.terrible C.difficult D.interesting

A.find B.reach C.solve D.understand

A.children B.brothers C.sisters D.friends

A.quietly B.easily C.angrily D.awfully

A.nicer B.smaller C.lighter D.drier

A.small B.large C.new D.dirty

A.took on B.took off C.took place D.took away

A.trees B.islands C.beaches D.rivers

A.lost B.dropped C.passed D.left

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TheJapaneseMacacamonkeyhasbeen