(单选题)

What does the underlined word “lax” in paragraph 5 refer to?

A.Safe.

B.Important.

C.Unreliable.

D.Unnecessary.

参考答案：C

参考解析：

词义猜测题。根据第五段最后一句“As a consequence, measures should be carried out to prevent potential disasters.”可知，应采取措施防止潜在的灾害。由此可推测其原因是随着时间的推移，安全指导方针将不再安全。Safe意为“安全的”；Important意为“重要的”；Unreliable意为“不可靠的”；Unnecessary意为“不必要的”。故选C。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语

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