【題目】 中新網(wǎng)5月26日電 中國地震臺網(wǎng)正式測定:5月26日9時左右(北京時間)在西藏日喀則市謝通門縣(北緯30.34度，東經(jīng)87.70度)發(fā)生4.3級地震，震源深度8千米。

據(jù)此回答下面小題。

【1】地震發(fā)生時，來自中國西藏的卓瑪正在國外某城市(西五區(qū))考察，此時卓瑪所在城市的區(qū)時是

A. 5月25日22時B. 5月26日6時

C. 5月25日20時D. 5月26日22時

【2】地球自轉一周要24小時，那么甲、乙兩地的經(jīng)度相差30°，時間就相差

A. 15小時B. 15分鐘

C. 2小時D. 1小時

【答案】

【1】C

【2】C

【解析】

【1】根據(jù)區(qū)時的計算，兩地相差幾個時區(qū)，，就相差幾個小時，東邊地點的時刻比西邊早，東加西減，北京市東八區(qū)，國外某城市(西五區(qū))，兩地相差13個時區(qū)，所以相差13個小時，5月26日9時減去13個小時，就是5月25日20時。故選C。

【2】地球自轉一周要24小時，轉過的經(jīng)度是360°，共24個時區(qū)，所以每個時區(qū)15°，兩地相差幾個時區(qū)，就相差幾個小時，所以甲、乙兩地的經(jīng)度相差30°，時間就相差時間就相差2個小時。故選C。

該題考查時區(qū)和區(qū)時的計算，記住方法即可解答。

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