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【单选题】

 Most fishes and many reptiles have ribs along most of the spine, but in mammals （） only in the chest area. 

A. they are found 
B. finding them 
C. in which they are found 
D. are found 
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根据网考网移动考试中心的统计，该试题：

80%的考友选择了A选项

9%的考友选择了B选项

8%的考友选择了C选项

3%的考友选择了D选项

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