题目

阅读下面短文，掌握其大意，然后从第36至第55小题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。                          Washoe is a young chimpanzee(黑猩猩). She is no 36 chimpanzee, though. Scientists are doing a research 37her. They want to see how civilized(驯化)she can 38 Already she does many things a human being can do. For example, she has been learning how to exchange 39with people. The scientists are teaching her 40language. When she wants to be picked 41, Washoe points up with one fin在-0.3168中，用数字4替换其中的一个非0数字后，使所得的数最大，则被替换的数字是A.1B.3C.6D.8