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单选题
Theoretically, a good screwdriver should last a lifetime, but it rarely _____, usually because it is used at one time or another as a substitute for some other tool.
A
has
B
is
C
should
D
does
参考答案
参考解析
解析：
句意：理论上讲，一把好的螺丝刀能用一辈子，但事实并非如此，因为它通常时不时地被当作其他工具使用。句子本来是it rarely last…为避免重复，应使用助动词does来替代动词last。
句意：理论上讲，一把好的螺丝刀能用一辈子，但事实并非如此，因为它通常时不时地被当作其他工具使用。句子本来是it rarely last…为避免重复，应使用助动词does来替代动词last。
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