题目内容

【题目】朝鲜最高人民会议常任委员会颁布政令，决定自2015年8月15日起调整标准时，使用“平壤时间”，即以127°30′E为基准设定的朝鲜标准时间。朝鲜此前与韩国和日本一样，采用东九区区时作为标准时间。据此完成下列各题。

【1】

A. 不变 B. 调慢半小时 C. 拨快半小时 D. 拨快1小时

【2】

A. 不变 B. 减少半小时 C. 增加半小时 D. 增加1小时

【3】

A. 朝鲜此日昼短夜长

B. 此时地球公转速度较快

C. 此日直射点位于北半球且正向北移动

D. 此时南极附近出现极夜现象

【答案】

【1】B

【2】A

【3】D

【解析】试题分析：

【1】根据材料，朝鲜以前采用东九区区时作为标准时间，即135°E的地方时为标准时间。2015年8月15日，以127°30′E为基准设定的朝鲜标准时间。两地经度相差7.5°，东边的时间早，朝鲜人的钟表时间将调慢半小时，B对。A、C、D错。

【2】北京到平壤两地距离不变，飞机速度不变，两地间的航班飞行时间不变，A对。B、C、D错。

【3】调整期间日期是8月15日，太阳直射点在北半球，正向南移动，C错。朝鲜此日昼长夜短，A错。此时地球公转速度较慢，正变快，B错。 此时南极附近出现极夜现象，D对。

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