问题：
[单选题]A wire lengthens while it is heated( )
A、当金属丝被加热以后,它就会变长。
B、金属丝受热则伸长。
C、我们将金属丝加热以后,它就会变长。
D、当我们将金属丝加热以后,就可以把它拉长
参考答案：
C
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