视频精讲 口语朗读
语篇类型: 科普说明
难度星级: ★★★★
建议用时: /8 min
参考答案: P38
看不见的巨手：银河系为何偏离轨道？
The mysterious “Great Attractor” is pulling the Milky Way galaxy off course.
No matter what we're doing right now—sitting, standing, walking—we're moving.
First, the Earth is turning very fast while it's in space, going about 1,000 miles per hour, or 1,600 kilometres per hour. This turning makes our days and nights. Next, the Earth and other planets are going around the sun. We move at about 67,000 miles per hour, or 108,000 kilometres per hour. This movement makes our seasons and years. Also, the sun and everything around it are going around the middle of our galaxy, the Milky Way, really fast—over 500,000 miles per hour, or 828,000 kilometres per hour. Besides, everything in the universe is always getting bigger as it spreads out.
But in the 1970s, space experts noticed that something was different about the galaxies close to us, called the Local Group. These galaxies were being pulled away from their normal course really fast, towards something we couldn't see. They named this place the Great Attractor, but it's hard to learn more because we can't see it well.
“The Milky Way has so many stars and dust, which hide what we want to see in that direction. So our galaxy is hiding the Great Attractor,” says Jorge Moreno, a space expert. This place we can't see is called the Zone of Avoidance by scientists. We still don't know everything about why the Milky Way and other galaxies are being pulled off course, but there have been some ideas. Most recently, the prime suspect is a very big group of galaxies called Laniakea, which means “big sky” in Hawaiian.
阅读短文,选择合适的选项。
()1. Which of the following can be put in “ ▲ ”?
A. Why is the Milky Way being pulled? B. The Great Attractor is magical.
C. How do we unlock space secrets? D. We're moving in four main ways.
()2. People can't see the Great Attractor well because .
A. it's too far B. stars and dust block the view
C. it moves too fast D. it's not bright
()3. 词义猜测 The underlined phrase “Zone of Avoidance” probably means “”.
A. A hidden sky area B. Galaxy speed C. Empty space D. Galaxy attraction cause
()4. 推理判断 What can we infer about the Great Attractor?
A. It's inside the Milky Way. B. It's a large object pulling galaxies.
C. It was found in 1970. D. It's a single galaxy.
词汇积累
course /kɔːs/ n. 航线
universe /'juːnɪvɜːs/ n. 宇宙
towards /təˈwɔːdz/ prep. 朝
dust /dʌst/ n. 尘埃
语法充电
the Milky Way galaxy 银河系 pull ... off course 使……偏离轨道
move at ... speed 以·速度移动 turn fast 快速旋转
1. 连接词:First ... Next ... Also ... Besides ...学习顺序逻辑词,组织段落结构。
2. 比较级:形容词比较级(bigger, faster)或最高级(biggest)用于比较。

1. D 细节理解题。根据文章第二段“First, the Earth is turning very fast while it's in space, going about 1,000 miles per hour, or 1,600 kilometres per hour ... Next ... Also, the sun ... Besides, everything in the universe is always getting bigger as it spreads out.”可知，我们有四种主要的运动方式。故选 D。
2. B 细节理解题。根据“The Milky Way has so many stars and dust, which hide what we want to see in that direction. So our galaxy is hiding the Great Attractor”可知，人们无法清晰看到大吸引体的原因是银河系中的恒星和尘埃遮挡了视线。故选 B。
3. A 词义猜测题。根据“This place we can't see is called the Zone of Avoidance by scientists.”可知，“Zone of Avoidance”指的是因银河系遮挡而无法观测的区域，即天空中被隐藏的部分。故选 A。
4. B 推理判断题。根据“In the 1970s, space experts noticed that something was different about the galaxies close to us, called the Local Group. These galaxies were being pulled away from their normal course really fast, towards something we couldn't see. They named this place the Great Attractor”可知，大吸引体是一个巨大的物体，拉动着星系的运动。故选 B。
知识积累 天文学知识背景的英语表达
star 恒星 planet 行星 comet 彗星
rotation 自转 revolution 公转
Solar System 太阳系 Milky Way galaxy 银河系
universe expansion 宇宙膨胀
galaxies 星系(由恒星、气体、尘埃和暗物质组成的受引力束缚的巨大系统)
black hole 黑洞(引力极强的时空区域，任何东西都无法逃脱)
axis 轴(行星围绕其旋转的假想线)
orbit 轨道(一个物体在空间中围绕另一个物体移动的路径)
nebula 星云(太空中恒星形成的气体和尘埃云)
constellation 星座(形成可识别图案的一组恒星)，如 The Big Dipper 北斗七星
supernova 超新星 solar eclipse 日食
aurora 极光 dark matter 暗物质
Big Bang Theory 大爆炸理论