题文
At minus 130℃, a living cell can be __________ for a thousand years.
| A．spared |
| B．protected |
| C．preserved |
| D．developed |
推荐试卷
At minus 130℃, a living cell can be __________ for a thousand years.
| A．spared |
| B．protected |
| C．preserved |
| D．developed |
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