问题描述：
[单选]
近代科学的发现得出这样的结论：物质可以产生能，能又可以产生物质。（）
A．Modern scientific discoveries are led to the conclusion that energy may be created from matter and that matter, in turn, may be created from energy.
B．Modern scientific discoveries have led to the conclusion that matter can produce energy and can produce matter again.
C．Modern scientific discoveries lead to the conclusion that energy may be created from matter and that matter, in turn, may be created from energy.
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