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  • 1.  完形填空

    The Japanese Macaca monkey has been studied in the wild for over 50 years. In 1952, on one small Japanese island, scientists dropped some 1  in the dirt for the monkeys. The monkeys liked their taste, but they found the dirt 2

    One clever 18-month-old monkey found she could 3  the problem by washing the sweet potatoes in a nearby river. She taught this to her mother. Her 4  also learned this new way and they taught their mothers, too. 

    All the younger monkeys 5  learned to wash the dirty sweet potatoes to make them 6  to eat. But many old monkeys found it very hard to learn this and still ate the 7  sweet potatoes. 

    Then something very surprising                                       . In the autumn of 1958, scientists found that the monkeys on other nearby 8 began washing their sweet potatoes too. Scientists still don't fully understand how this knowledge was 9 from one island to another.

    (1)
    A . sweet potatoes B . green plants C . hard stones D . fresh nuts
    (2)
    A . beautiful B . terrible C . difficult D . interesting
    (3)
    A . find B . reach C . solve D . understand
    (4)
    A . children B . brothers C . sisters D . friends
    (5)
    A . quietly B . easily C . angrily D . awfully
    (6)
    A . nicer B . smaller C . lighter D . drier
    (7)
    A . small B . large C . new D . dirty
    (8)
    A . took on B . took off C . took place D . took away
    (9)
    A . trees B . islands C . beaches D . rivers

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