1 . In the 1960s and 1970s, the greatest fear was that the human race, and possibly all advanced life forms on the planet, could be wiped out by nuclear missiles. Today, however, environmental problems have taken over as the greatest risk to life on Earth. Scientists are thinking of ways to lower this risk, such as replacing coal and oil with forms of renewable energy. But they are also preparing for the worst: what can we do if the terrifying scenes in films such as The Day After Tomorrow happen in real life? What is our plan B for Earth?

One option is to explore other planets to see if we could live on them. The most likely choice is Mars, which is relatively close to Earth and has an environment less hostile than that of other planets. Mars has fascinated people since ancient times, and today our interest in Martian exploration is greater than ever before. Besides, more governments are making efforts to educate the public on the Red Planet.

There is no doubt that humankind is drawn towards Mars. However, sending people there will require all the skill, courage and intelligence. While the Moon can be reached within days, it would take months to reach Mars, travelling through dangerous solar radiation. And even if the first settlers do reach Mars safely, they may not be able to return to Earth — ever. Staying alive will be a daily challenge, but as proved by the Biosphere 2 experiment, not impossible. As early as the 1980s, scientists were building Biosphere 2 in the Arizona desert, consisting of a closed space in which people, animals and plants could live together. Although the two-year experiment was not a success, it did provide us with a better understanding of how humans might be able to live on another planet.       

For now, human settlement of Mars is still decades away. Until we are finally able to live on another planet, we need to take much better care of our own. Right now, it's the only one we have!

1. What was the biggest threat to humans in the 1960s and 1970s?

A．Human race themselves.	B．All advanced life forms.
C．Nuclear missiles.	D．Environmental problems.

2. Why is Mars so attractive to scientists?

A．It's closest to the earth.

B．It has relatively appropriate living conditions.

C．It has drawn the public's attention in recent years.

D．It has a more hostile environment.

3. What can be inferred from the passage?

A．Humans have visited Mars.

B．The Biosphere 2 experiment proved to be valueless.

C．Humans will have to go and live on another planet.

D．Our Plan A includes developing renewable energy resources.

4. From which magazine would the passage probably be taken?

A．The Traveler.	B．Environmental Concerns.
C．All About Space.	D．Biology for Fun,

2 . 高考在即，你对未来的职业生涯有什么规划吗？班级的英语角正在进行相关话题的作文征集，请用英文简单介绍一下你将来想从事的专业、职业及原因。
注意：
1. 写作词数应为80左右；
2. 请按如下格式在答题卡的相应位置作答。
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3 . 一家英语报社向中学生征文，主题是“十年后的我”，请根据下列要点和你的畅想完成短文。
1.家庭：
2．工作：
3.业余生活。
注意：1.词数100左右：
2.可以适当增加细节，以使行文连贯：
3.开头语已为你写好。
I often imagine what my life will be like in the future._______________________________
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