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【单选题】

James Frey changed the instance of 'I cut my cheek' in his book because

A.
the reality was not ridiculous.
B.
the reality was not true.
C.
the reality was hard to describe.
D.
the reality was worthless to write.
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参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【多选题】根据国家标准 ( GB10408.4.-2000 )规定:探测器的光束被遮挡的持续时间 ≥40 ms±10% :

A.
探测器应产生报警信号
B.
探测器不应产生报警信号
C.
探测器都应产生报警信号
D.
以上都不对