49 According to the passage, which of the following statements is NOT true?
(A) The chimps at the St. Louis Zoo work for a living.
(B) The chimps at the St. Louis Zoo try to get baby food themselves.
(C) The chimps hide the baby food and honey inside anthills.
(D) The chimps know how to make and use tools.
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統計: A(10), B(22), C(46), D(3), E(0) #1224754
統計: A(10), B(22), C(46), D(3), E(0) #1224754