关键用句:
A solar eclipse occurs when the moon passes between the Sun and the Earth so that the Sun is fully or partially covered.
日蚀发生在在月球处于太阳和地球之间时,这导致太阳被完全或部分地遮住了
A solar eclipse occurs when the moon passes between the Sun and the Earth so that the Sun is fully or partially covered. This can only happen during a new moon, when the Sun and Moon are in conjunction as seen from the Earth. At least two and up to five solar eclipses can occur each year on Earth, with between zero and two of them being total eclipses. Total solar eclipses are nevertheless rare at any location because during each eclipse totality exists only along a narrow corridor in the relatively tiny area of the Moon's umbra.
A total solar eclipse is a spectacular natural phenomenon and many people travel to remote locations to observe one. The 1999 total eclipse in Europe helped to increase public awareness of the phenomenon, as illustrated by the number of journeys made specifically to witness the 2005 annular eclipse and the 2006 total eclipse. The most recent solar eclipse occurred on January 26, 2009, and was an annular eclipse.
In ancient times, and in some cultures today, solar eclipses have been attributed to supernatural causes. Total solar eclipses can be frightening for people who are unaware of their astronomical explanation, as the Sun seems to disappear in the middle of the day and the sky darkens in a matter of minutes.
一年级英语上册教案 Unit1My classroom 第三课时
沪教版小学英语一年级下册教案unit1课时4
沪教牛津版小学英语一年级上册 Unit 3 第二课时教案
苏教版牛津小学一年级英语教案Unit1 What`s your name
一年级英语上册教案Unit1 My classroom第一课时
沪教牛津版小学英语一年级上册 Unit3 period2教案
一年级英语上册教案Unit1 My classroom第一课时教案
上海版牛津一年级英语教案 Unit 3 My abilities
上海牛津版一年级英语下册教案Unit9 Revision(3)
牛津小学一年级英语Unit5 Fruit教案(五个课时)
新起点小学一年级英语教案Unit7 Fruit
牛津版一年级英语上册unit5 Fruit教案(3)
一年级英语上册教案 Unit 1 Period 1
上海牛津版一年级英语下册Unit3 Colours教案(1)
外研版一年级英语上册教案Unit1 Hello
一年级英语下册Unit2 Small animals第三课时教案
牛津版一年级英语上册教案Unit4 My bag第一课时
新课标小学英语第一册期末考试百词范围
上海牛津版一年级英语Unit2 Small animals第四课时教案
小学一年级英语下册Unit2 Small animals教案1
苏教版小学一年级英语下册Unit5 On the road教案
一年级英语上册教案 Unit 1 第二课时
一年级英语教案Module1 unit6 Mid-Autumn Festival
上海牛津版一年级英语Unit7 My family教案
一年级英语上册Unit8 Playtime 第三课时教案
上海牛津版一年级英语下册Unit2 Small animals教案
上海牛津版一年级英语下册Unit2 Small animals第五课时教案
牛津版一年级英语上册Unit 2 Good morning 教案
牛津版一年级英语上册unit5 Fruit教案(2)
沪教版小学英语一年级下册教案unit1课时5
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |