题干

阅读下列材料,完成下列问题。

材料一   这次卫星发射成功,是我国发展空间技术的一个良好开端,是***无产阶级革命路线的伟大胜利,是无产阶级“文化大革命”的又一丰硕成果……中国人民这一伟大胜利,给正在坚持武装斗争的亚、非、拉各国人民和全世界革命人民以巨大的鼓舞,给反革命的美帝国主义和社会帝国主义以沉重的打击,粉碎了他们垄断空间技术的迷梦。

——据新华社1970年4月25日讯

材料二   “嫦娥二号”是我国发射的第二颗绕月探测卫星,它……直接进入地月转移轨道、首次使用X频段测控、对“嫦娥三号”着陆区进行高分辨率成像……这一系列重大技术突破,将为今后的“嫦娥三号”实现月球软着陆奠定基础。从地面迈向天空,再迈向太空,继而迈向深空、迈向另外一个天体,我们可以离开自己栖息的摇篮,奔向原本陌生的宇宙空间,这是科学的力量、进步的阶梯、文明的标尺。

——新华网北京2010年10月1日电《嫦娥二号:中国航天事业的新阶梯》

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    Garbage(垃圾) Island

    You can't see it from the air. It's almost impossible to see from a ship. But somewhere in the North Pacific is a huge island of garbage, just below the water surface.

    What is the island made of?

    The garbage island is not an island, but a collection of millions of plastic and other objects. The water movements of Pacific Ocean bring the objects together and cause them to go around in a big circle.

    Charles Moore found it in 1997 and named it “the Great Pacific Garbage Patch” .

    Where does all the plastic come from?

    Much of the garbage comes from everyday objects, such as shopping bags and water bottles. Some of these objects finally reach the ocean. Garbage from the western coast of North America takes about six years to reach it. Objects from East Asia take about a year. Other garbage comes from ships passing through the area.

    Is the Garbage Patch dangerous?

    The larger pieces of garbage are a problem for wildlife. For example, sea turtles(海龟)and seabirds often think the plastic is their food. They eat the plastic and die.

    In addition, the plastic stops sunlight from reaching deeper water. Without sunlight, very small sea animals die. Then, there is less food for larger fish to eat.

    What can we do to help stop it?

    Cleaning up the island isn't easy. But we can make people realize the problem. One environmentalist(环保主义者), David de Rothschild, is sailing around the world in boat made of plastic bottles to teach people about the problem of garbage in the sea.

    Another idea is that we can recycle the plastic garbage. Environmental engineer Cesar Harada is building a robot that collects pieces of plastic. Harada hopes to use his robot in the Pacific. Harada also has a website for reporting environmental problems. He says, “I hope everybody can become an environmental activist.”