题文
Cloned pigs differ __________ the originals __________ looks and behavior.
| A．in; from |
| B．from; in |
| C．at; from |
| D．in; at |
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Cloned pigs differ __________ the originals __________ looks and behavior.
| A．in; from |
| B．from; in |
| C．at; from |
| D．in; at |
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