So what happens when someone is born on leap day? Do they celebrate their birthdays each year,or do they instead have to wait four years to age? Statistics show that in nonleap years,about 80 percent still celebrate their birthdays in February,rather than on March 1.
【解题导语】 本文是一篇说明文,属于科普类短文阅读。文章主要介绍了闰日的作用和设置闰日的科学依据。
1.Paragraph 1 is written to
.
A.describe an amazing place
B.give readers some suggestions
C.offer basic knowledge of the topic
D.attract readers’ attention to the topic
解析:选D。写作目的题。由第二段中的“Without leap day...that could happen.”可知,第一段所描述的场景是历法中如果不设置闰日的话会出现的混乱局面。故作者写第一段是为了将读者的注意力吸引到本文的话题——闰日来。
2.Leap day is needed mainly because of the fact that
.
A.there are 24 hours in one day
初中学习网B.a year is divided into four seasons
C.the Earth doesn’t circle the sun at a constant speed
D.the Earth doesn’t circle the sun in exactly 365 days
解析:选D。细节理解题。由第三段中的“The Earth doesn’t circle the sun in exactly 365 days...the extra fraction of a day would cause the calendar to grow apart from the seasons over time.”可知答案为D。
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