Question

     The question whether there is life on Mars (火星) has made the public think a lot for more than a century. The closest look showed Mars to be a dusty,cold world,covered by air that is too thin to breathe. A British spaceship and Europe's Mars spaceship plan to land on Mars or enter orbit (轨道) around it. One of the NASA’s (美国宇航局) spaceships is expected (期 望) to land on January 3; the other is going to land on the opposite side of Mars on January 24.

    Since 1960,over twenty spaceships sent to Mars have failed. Most have been lost on flying up or landing because those are the most difficult times of any flights. Scientists wanted to find out whether there was water in Mars. In October,a team of scientists reported that Mars had been a dry wasteland. But first appeared here on Earth. Scientists at once raise a question： if what they said is true,what happened on Mars? Then what about the earth?

weeks later,a second team reported differently that they had found some marks showed clearly that they were made by the rivers. Such marks told us that Mars was a warmer place billions of years ago—just as life to the passage?

根据短文内容，完成下列各题。

根据短文内容，判断正(T) 误(F) 。

() Mars is a dusty,cold planet with little air to

breathe.

2. How many spaceships were sent to Mars but all failed since 1960?

3. What did the second team of the scientists find in Mars?

4. What was Mars like billions of years ago according.

5.将短文中画线的句子译成汉语。

Answer 1

导读

本文是一篇说明文，介绍了科学家们为了探索火星的奥 秘所做的艰苦的工作。

详析

1. T由第一段第二句的描述可知火星是—个布满灰尘的 寒冷世界，空气非常稀薄，不能呼吸。

2. Over twenty spaceships. 由第二段第一句的描述可知 从1960年以来，人类已经向火星发射了 20多艘宇宙飞 船,但都未成功。

3. The scientists found some marks made by the rivers.

由第二段第五句的描述可知科学家们在火星上发现了明 显的河流的迹象。

4. Mars was a warmer place billions of years ago. 由第二段第六句可知答案。

5. 大多数的宇宙飞船在飞行或着陆的时候都失败了，因为 那是飞行中最困难的时候。

breathe v.呼吸 raise a question 提出问题 

障碍句分析

But weeks later,a second team reported differently that they had found some marks showed clearly that they were made by the rivers.但是，几个星期以后，第二组科学家的报告完 全不同，他们在火星上发现了一些明显的河流的迹象。

本句是一个比较复杂的复合句，第一个that引导了一个 宾语从句，作reported的宾语，第二个that引导了一个定语从 句，修饰marks。