《2025年情景导学高中英语选择性必修第二册外研版》

Ⅲ. 重点句型
1. Since the 1960s, we have been sending unmanned spacecraft to Mars.
自 20 世纪 60 年代以来,我们一直在向火星发射无人飞船。
2. Encouraged by discoveries over the years, space agencies of various countries are planning manned missions to Mars that could take place within the next 25 years.
受到多年来这些发现的鼓舞,各国航天机构正计划在未来 25 年内进行载人飞船登陆火星的任务。
3. There is no doubt that humankind is drawn towards Mars, with dreams of making it our second home.
毫无疑问,人类被火星所吸引,梦想着把它作为我们的第二家园。

答案： 1. Since; have been sending 2. Encouraged by discoveries 3. There is no doubt that

Ⅳ. 课文导读
阅读课文,用完整句子回答下列问题,并试着将答句组成课文概要
1. What is the greatest risk to life on Earth today?
The greatest risk to life on Earth today is environmental problems.
2. Are scientists thinking of ways to lower this risk? What does our Plan A include? (such as)
Scientists are thinking of ways to lower this risk, such as replacing coal and oil with forms of renewable energy.
3. Is our Plan B to explore Mars to see if we could live on it?
Our Plan B is to explore Mars to see if we could live on it.
4. Has Mars fascinated people since ancient times? Have films related to Martian exploration been made?
Mars has fascinated people since ancient times. Films related to Martian exploration have been made.
5. Who is making efforts to educate the public on the Red Planet?
More governments and organisations are making efforts to educate the public on the Red Planet.
6. Have we been sending unmanned spacecraft to Mars since the 1960s? (besides)
Besides, we have been sending unmanned spacecraft to Mars since the 1960s.
7. Will sending people there require all the skill, courage and intelligence of the human race? (but)
But sending people there will require all the skill, courage and intelligence of the human race.
8. Is it possible that people will stay alive on Mars according to the Biosphere 2 experiment? Is human settlement of Mars still decades away? (although)
Although it is possible that people will stay alive on Mars according to the Biosphere 2 experiment, human settlement of Mars is still decades away.
9. What causes our planet to get warmer and warmer? Does it have a terrible effect on the biosphere? (now; which)
Now, human activity causes our planet to get warmer and warmer, which has a terrible effect on the biosphere.
10. What do we need to do before we find another planet to live on?
Before we find another planet to live on, we need to take much better care of the only planet we have.

答案： The greatest risk to life on Earth today is environmental problems. Scientists are thinking of ways to lower this risk, such as replacing coal and oil with forms of renewable energy. Our Plan B is to explore Mars to see if we could live on it. Mars has fascinated people since ancient times. Films related to Martian exploration have been made. More governments and organisations are making efforts to educate the public on the Red Planet. Besides, we have been sending unmanned spacecraft to Mars since the 1960s. But sending people there will require all the skill, courage and intelligence of the human race. Although it is possible that people will stay alive on Mars according to the Biosphere 2 experiment, human settlement of Mars is still decades away. Now, human activity causes our planet to get warmer and warmer, which has a terrible effect on the biosphere. Before we find another planet to live on, we need to take much better care of the only planet we have.