2. 外语
  3. The dog has always been noted for ______. The dog has been of most value to man in the development of ______.

The dog has always been noted for ______. The dog has been of most value to man in the development of ______.

admin2008-11-13  51
问题 The dog has always been noted for ______.
The dog has been of most value to man in the development of ______.
选项 A、a treatment for rabies
B、open-heart surgery
C、a cure for distemper
D、Both A and C
答案B
解析 见第三段第三句Open-heart surgery has been made possible largely because of the dog．
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