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Python程序设计单选题中等

以下哪一条是导入一个模块的正确语法？

0{ "key": "A", "text": "import numpy as np" }
1{ "key": "B", "text": "from numpy import as np" }
2{ "key": "C", "text": "import numpy" }
3{ "key": "D", "text": "from numpy import sqrt" }
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