【題目】家住北京的小明接到爸爸的一個(gè)國際長途電話，爸爸說，他所在位置向東進(jìn)入東半球、向西進(jìn)入西半球并且一年四季都是夏天。據(jù)此完成下列問題。

【1】小明的爸爸此時(shí)所在地的經(jīng)度是(　　)

A. 20°W B. 160°E

C. 0° D. 180°

【2】下列關(guān)于小明的爸爸所在地的緯度位置敘述正確的是(　　)

A. 位于高緯度地區(qū) B. 位于中緯度地區(qū)

C. 位于極地地區(qū) D. 位于低緯度地區(qū)

【答案】

【1】A

【2】D

【解析】東西半球不是以0度和180度為界，為了避免一些歐洲和非洲一些國家分成兩個(gè)半球，于是向西移了20°，所以東西半球以20°W和160°E所組成的經(jīng)線圈為界線，0°經(jīng)線是東西經(jīng)線的分界線，180°經(jīng)線是日期變更線。

【1】由題目可知，小明的爸爸向東進(jìn)入東半球，向西進(jìn)入西半球，說明他所在的經(jīng)線是東西半球的分界線，是東半球的起始線－20°W，故選A。

【2】由題目可知，小明的爸爸所站在位置是一年四季如夏天，說明他所在地的緯度位置是低緯度位置，故選D。

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