B. An event of imagination

　　C. A research on space.

　　D. A scientific adventure

　　答案:

　　2. When the first piece hits the South Atlantic, it causes_________.

　　A. an earthquake

　　B. damages to cities

　　C. an Earth explosion

　　D. huge waves

　　答案:

　　3. Why can't the northern half of the' earth escape for long?

　　A. Because the land is covered with water.

　　B. Because the light and heat from the sun cannot reach the earth.

　　C. Because people there cannot live at the temperature of zero.

　　D. Because wars break out among countries.

　　答案:

　　4. By giving the example of dinosaurs the author tries to prove_________.

　　A. animals could not live in the cold climate

　　B. what happened 65 million years ago was an invented story

　　C. the human beings will die out in 2094

　　D. the Earth could be hit by other objects in space Passage

　　答案:

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