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【题目】2010430日晚上8点(北京时间),上海市博会开幕仪式开始。全球各地留学生克服时差的影响,争相通过各种形式观看世博会开幕式现场,祝愿上海世博会取得圆满成功。据此完成下题

1

A. 地球的自转 B. 地球的公转

C. 地转偏向力的存在 D. 太阳直射点的南北移动

2

A. 429日清晨 B. 430日上午

C. 430日中午 D. 429日下午

3

A. 先向北,后向南 B. 先向南,后向北

C. 先向北,后向南,再向北 D先向南,后向北,再向南

【答案】

1A

2C

3A

【解析】试题分析:

1】由于地球的自转使得地球上不同的经线有不同的地方时,也就是各地存在时间的差异。选A正确。

230日晚上8点(北京时间)开幕仪式开始,伦敦是在0时区,比北京时间晚了8小时;在伦敦看开幕式的时间是43012点,即中午。选C正确。

351日至1031日,太阳直射点由北半球先继续向北回归线方向运动,到622日达最北;后向南移,到923日到赤道,然后继续南移,到1031日处在南回归线与赤道之间。选A正确。

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