2. 外语
  3. This passage is chiefly about ______ 。 "Alert to" (Line 1, Para.4) most probably means ______ .

This passage is chiefly about ______ 。 "Alert to" (Line 1, Para.4) most probably means ______ .

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问题 This passage is chiefly about ______ 。
"Alert to" (Line 1, Para.4) most probably means ______ .
选项 A、aware of
B、watchful for
C、responsible for
D、busy with
答案B
解析 题干意为“文中‘Alert to’最可能的意思是…”。该题为词汇题。由第四段第一句“Advances in knowledge of fire weather ale helping forest protection forces to know when to be alert to lightningcaused fires.”可以看出关于造成火灾的天气的知识会帮助森林防火人员知道什么时候应该警惕闪电造成的大火。“alert to”意为“警惕，警戒”，与“watchful for”同义。
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