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【单选题】
科学家发现一些生物的细胞色素C有差异：人与黑猩猩的差异最小，与马的差异大一些，与果蝇、向日葵的差异则更大。这说明与人亲缘关系最近的是（）
A.
马
B.
果蝇
C.
向日葵
D.
黑猩猩
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【单选题】Passage Three Musicians are fascinated with the possibility that music may be found in nature; it makes our own desire for art seem all the more essential. Over the past few years no les...
A.
music should replace language as the major arena of animal research
B.
animal experiments are more often than not cruel and inhuman
C.
great progress has been made in the field of interspecies communication
D.
the experiment with music may help scientific research on animals
相关题目：
【单选题】Passage Three Musicians are fascinated with the possibility that music may be found in nature; it makes our own desire for art seem all the more essential. Over the past few years no les...
A.
music should replace language as the major arena of animal research
B.
animal experiments are more often than not cruel and inhuman
C.
great progress has been made in the field of interspecies communication
D.
the experiment with music may help scientific research on animals
参考解析：
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