「要求」
雖然我們生活在同一星球上，但世界各地所用的時(shí)間卻不盡相同。宣傳委員小王想在本期英語板報(bào)中向同學(xué)們介紹一下有關(guān)時(shí)間的知識。他找來一些科普材料，讓你據(jù)此寫一篇板報(bào)宣傳稿。材料如下：
夏天一些國家將時(shí)鐘比格林威治平時(shí)（G.M.T.）調(diào)快一小時(shí)。在英國，這稱為英國夏令時(shí)間（British Summer Time）。它有助于人們充分利用清晨的陽光，而在晚上節(jié)約照明用電及燃料。
各國的時(shí)間因經(jīng)度變化而不同。當(dāng)人們乘船或飛機(jī)旅行時(shí)，他們就會(huì)感到這一點(diǎn)。
假設(shè)我們星期一正午從倫敦出發(fā)，向西飛。如果我們飛得足夠快，以至于一直保持太陽在我們的頭頂上，那么當(dāng)我們飛過加拿大、太平洋、俄羅斯、德國，而后再一次回到倫敦時(shí)，時(shí)間仍舊是正午。但是那不可能是同一天的正午，因?yàn)槲覀円呀?jīng)隨著地球轉(zhuǎn)了一圈。所以我們再次到達(dá)倫敦時(shí)已是星期二正午。那么，日期在我們旅途中的哪一個(gè)地方改變了呢。
在世界地圖上我們會(huì)看到一條由北至南穿過太平洋的線。這就是國際日期變更線（the International Date Line）。為了避免造成混亂，這條假想線所經(jīng)的大部分地區(qū)都是無人居住的海洋。
「范文」
Time in Our World
In summer the clocks are kept one hour ahead of GMT in some countries. In Britain it is called British Summer Time. It helps people to make the best of early morning sunlight and to save lighting electricity and fuel at night.
Although many countries use one time， time differs from country to country in terms of different longitude. People will be aware of the time difference when they are traveling by sea or by air.
Suppose we set out from London by air at noon on a Monday and fly westwards. Let us also imagine that we fly as fast as the sun， so that it always remains exactly overhead. And when we cross Canada， the Pacific Ocean， Russia， Germany and back to London again， it is still noon， but it can not be noon on the same day because the earth has rotated once and one day has passed. Therefore， we have arrived again in London on Tuesday at noon. Where， on our journey， does the day change from Monday to Tuesday？
A map of the world shows， in the Pacific Ocean， a line running from north to south. It is called the International Date Line. For the most part， this imaginary line passes through ocean areas to avoid confusion that would arise if it runs through the populated land.
「評語」
該文屬科普性文章，寫起來難度較大。但作者用相對簡單的詞匯將復(fù)雜的意思表達(dá)得很清楚，達(dá)到了科普宣傳的目的。句型的變化使文章行文顯得緊湊，同時(shí)也為文章增添了生氣。
雖然我們生活在同一星球上，但世界各地所用的時(shí)間卻不盡相同。宣傳委員小王想在本期英語板報(bào)中向同學(xué)們介紹一下有關(guān)時(shí)間的知識。他找來一些科普材料，讓你據(jù)此寫一篇板報(bào)宣傳稿。材料如下：
夏天一些國家將時(shí)鐘比格林威治平時(shí)（G.M.T.）調(diào)快一小時(shí)。在英國，這稱為英國夏令時(shí)間（British Summer Time）。它有助于人們充分利用清晨的陽光，而在晚上節(jié)約照明用電及燃料。
各國的時(shí)間因經(jīng)度變化而不同。當(dāng)人們乘船或飛機(jī)旅行時(shí)，他們就會(huì)感到這一點(diǎn)。
假設(shè)我們星期一正午從倫敦出發(fā)，向西飛。如果我們飛得足夠快，以至于一直保持太陽在我們的頭頂上，那么當(dāng)我們飛過加拿大、太平洋、俄羅斯、德國，而后再一次回到倫敦時(shí)，時(shí)間仍舊是正午。但是那不可能是同一天的正午，因?yàn)槲覀円呀?jīng)隨著地球轉(zhuǎn)了一圈。所以我們再次到達(dá)倫敦時(shí)已是星期二正午。那么，日期在我們旅途中的哪一個(gè)地方改變了呢。
在世界地圖上我們會(huì)看到一條由北至南穿過太平洋的線。這就是國際日期變更線（the International Date Line）。為了避免造成混亂，這條假想線所經(jīng)的大部分地區(qū)都是無人居住的海洋。
「范文」
Time in Our World
In summer the clocks are kept one hour ahead of GMT in some countries. In Britain it is called British Summer Time. It helps people to make the best of early morning sunlight and to save lighting electricity and fuel at night.
Although many countries use one time， time differs from country to country in terms of different longitude. People will be aware of the time difference when they are traveling by sea or by air.
Suppose we set out from London by air at noon on a Monday and fly westwards. Let us also imagine that we fly as fast as the sun， so that it always remains exactly overhead. And when we cross Canada， the Pacific Ocean， Russia， Germany and back to London again， it is still noon， but it can not be noon on the same day because the earth has rotated once and one day has passed. Therefore， we have arrived again in London on Tuesday at noon. Where， on our journey， does the day change from Monday to Tuesday？
A map of the world shows， in the Pacific Ocean， a line running from north to south. It is called the International Date Line. For the most part， this imaginary line passes through ocean areas to avoid confusion that would arise if it runs through the populated land.
「評語」
該文屬科普性文章，寫起來難度較大。但作者用相對簡單的詞匯將復(fù)雜的意思表達(dá)得很清楚，達(dá)到了科普宣傳的目的。句型的變化使文章行文顯得緊湊，同時(shí)也為文章增添了生氣。