Some component parts should be replaced regularly because______.A．they are outdatedB．they
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Some component parts should be replaced regularly because______.
A．they are outdated
B．they need to be oiled
C．they become worn out
D．they are easily available
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正确答案：C
解析：细节题。本题询问一些零部件应该经常更换，原因是什么。此题答案定位在第四段。Car servicing essentially means inspecting the car thoroughly for any damaged components，and replacing some parts regularly that wear out over time．(汽车保养意味着彻底检查车辆以寻找任何已损坏的零部件，经常更换一些由于长期使用而有破损的零件。)因此选项C(因为它们变得破损)正确。选项A(因为它们过期了)、选项B(因为它们需要上油)、选项D(因为它们很容易得到)在原文中都未提及，故选C。