题目内容

【题目】 2018年央视春晚特别设置了四大分会场，分别是: 广东珠海（21°N）、山东泰安（36°N）、海南三亚（18°N）、贵州省黔东南（26°N）。家住乌鲁木齐的小红有幸能来到北京主会场观看春晚。

据此完成下面小题。

【1】2018年央视春晚四大分会场位于热带地区的是（ ）

A.海南三亚

B.广东珠海、海南三亚

C.广东珠海、海南三亚、贵州省黔东南

D.广东珠海、山东泰安、海南三亚、贵州省黔东南

【2】小红到北京后，发现北京的日出时间比乌鲁木齐早了近两小时，小红感到很纳闷。请你帮她找出主要原因（ ）

A.地球自转B.地球公转

C.海拔高度不同D.纬度位置差异

【答案】

【1】B

【2】A

【解析】

根据我国大部分位于北温带，小部分位于热带没有寒带；地球绕地轴不停转动，叫地球自转。地球自转的方向是自西向东，自转的周期是一天。地球自转产生的现象是昼夜交替、日月星辰东升西落和时间差异，进行分析解答。

【1】依据四个分会场的地理位置来看，广东的珠海和海南的三亚，属于热带地区，其他两地属于北温带。故选：B。

【2】题干中描述的时间差异是地球的自转运动形成的，其方向是自西向东的。故选：A。

本题主要考查我国温度带的划分及时间差异产生的原因。

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