GMAT 考满分题库

- 语法SC -

The underlying fur pattern of a tabby cat is visible on cats with one ticked tabby gene but is never seen on those with two copies of the gene.

  • A

    is visible on cats with one ticked tabby gene but is never seen on

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  • B

    is visible on cats with one ticked tabby gene that has never been seen on

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  • C

    appears on cats with one ticked tabby gene, although has never been seen at

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  • D

    appears on cats with one ticked tabby gene, although never seen on

    分析该选项
  • E

    appears on cats with one ticked tabby gene, which have never been seen in

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显示答案
正确答案: A

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