单选题Last steps on stairs may become a high-risk accident area if they are _____.Anot painted in a different colorBnot marked with bright tapesCfixed with grab barsDvery brightly lit

单选题
Last steps on stairs may become a high-risk accident area if they are _____.
A

not painted in a different color

B

not marked with bright tapes

C

fixed with grab bars

D

very brightly lit


参考解析

解析:
本题是细节题。从文章第二段“Mark trouble spots with bright tapes. The first and last steps...”可知,用明显的胶带或照明来突出容易摔跤的地点,可以使这些地方更容易被看到。A项“没有用不同颜色标出”,C项“安装上扶手”,D项“良好的熙明”,均与原文不符。正确答案为B。

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