概括大意与完成句子

Did you know that before 1950, hurricanes had no names? They were simply given numbers. The first names were simply Alpha, Bravo, Charlie, etc. but in 1953, females names were given because of the unpredictability (不可预知) factor of the storms. In 1979, realizing the sexist (性别歧视的) nature of such names, the lists were expanded to include both men and women.

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6-12岁英语高频重点词汇，搞定小学英语全段考试

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The main consideration of using males and females’ names for hurricanes is __________.

A、the timely (及时的) discovery

B、its uncertainty

C、sex equality

D、its connection with humans

【正确答案】 C

【答案解析】 依靠原文（利用(male, female) names作为答案线索词）中最后一句判断答案为C（与性别有关）。