Question

【题目】

【1】What is true about the Milky Way?

A.There are only stars inside it.

B.There is a black hole at its center.

C.It’s the biggest spiral galaxy in the universe.

D.It takes 100,000 years to get there from Earth.

【2】Which of the following is the main factor in categorizing galaxies?

A.Shape.B.Size.

C.Number of stars.D.Distance from the sun.

【3】Which of the following galaxies can be classified as irregular?

A.Whale Galaxy — similar to the Milky Way both in size and shape.

B.Cygnus A (3C 405) Galaxy — the brightest egg shape we can observe.

C.Cigar Galaxy — long and narrow galaxy that looks like an ashy cloud.

D.Sunflower Galaxy — galaxy with multiple arms radiating from its bright core.

Answer 1

【答案】

【1】B

【2】A

【3】C

【解析】

这是一篇说明文。文章主要介绍了一些宇宙中星系的情况，如螺旋星系、椭圆星系和不规则星系等。

【1】细节理解题。根据SPIRAL GALAXY部分中Our galaxy has a huge black hole at its center that billions of stars revolve around.可知，我们的星系中心有一个巨大的黑洞，数十亿颗恒星围绕着它旋转。由此可知，银河系中间有一个巨大的黑洞。故选B。

【2】细节理解题。根据IRREGULAR GALAXY部分中There are many other shapes of galaxies that aren’t spiral or elliptical. They all fit into irregular category.可知，不规则的星系部分中还有许多其他星系的形状不是螺旋或椭圆。它们都属于不规则的类别。由此可知，星系主要是根据形状来进行分类。故选A。

【3】推理判断题。根据IRREGULAR GALAXY部分中There are many other shapes of galaxies that aren’t spiral or elliptical. They all fit into irregular category.可知，不规则的星系部分中还有许多其他星系的形状不是螺旋或椭圆。它们都属于不规则的类别。结合选项可推知，狭长的，看起来像一片灰蒙蒙的云的雪茄星系可以被归类为不规则星系。故选C。

直接信息题

对此类题型，考生可以首先从问题中找到关键词，然后以此为线索，运用略读及查阅的技巧在文中迅速寻找这一细节，找到后再把这一部分内容仔细阅读一遍，仔细比较所给选项与文中细节的细微区别，在准确理解细节的前提下，最后确定最佳答案。如第一小题，根据SPIRAL GALAXY部分中Our galaxy has a huge black hole at its center that billions of stars revolve around.可知，我们的星系中心有一个巨大的黑洞，数十亿颗恒星围绕着它旋转。由此可知，银河系中间有一个巨大的黑洞。故选B。