【題目】 2018年央視春晚特別設(shè)置了四大分會(huì)場，分別是: 廣東珠海（21°N）、山東泰安（36°N）、海南三亞（18°N）、貴州省黔東南（26°N）。家住烏魯木齊的小紅有幸能來到北京主會(huì)場觀看春晚。

據(jù)此完成下面小題。

【1】2018年央視春晚四大分會(huì)場位于熱帶地區(qū)的是（ ）

A.海南三亞

B.廣東珠海、海南三亞

C.廣東珠海、海南三亞、貴州省黔東南

D.廣東珠海、山東泰安、海南三亞、貴州省黔東南

【2】小紅到北京后，發(fā)現(xiàn)北京的日出時(shí)間比烏魯木齊早了近兩小時(shí)，小紅感到很納悶。請(qǐng)你幫她找出主要原因（ ）

A.地球自轉(zhuǎn)B.地球公轉(zhuǎn)

C.海拔高度不同D.緯度位置差異

【答案】

【1】B

【2】A

【解析】

根據(jù)我國大部分位于北溫帶，小部分位于熱帶沒有寒帶；地球繞地軸不停轉(zhuǎn)動(dòng)，叫地球自轉(zhuǎn)。地球自轉(zhuǎn)的方向是自西向東，自轉(zhuǎn)的周期是一天。地球自轉(zhuǎn)產(chǎn)生的現(xiàn)象是晝夜交替、日月星辰東升西落和時(shí)間差異，進(jìn)行分析解答。

【1】依據(jù)四個(gè)分會(huì)場的地理位置來看，廣東的珠海和海南的三亞，屬于熱帶地區(qū)，其他兩地屬于北溫帶。故選：B。

【2】題干中描述的時(shí)間差異是地球的自轉(zhuǎn)運(yùn)動(dòng)形成的，其方向是自西向東的。故選：A。

本題主要考查我國溫度帶的劃分及時(shí)間差異產(chǎn)生的原因。

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