4. This problem can (solve) if we work hard together.

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3. 航天飛機(jī)能以光速的一半飛行嗎？

Can a space shuttle fly?

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1. 科學(xué)家們不知道人們能否在其他行星上種植植物。

Scientists don't knowon other planets.

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() 1.  (2015 •廣東) 一there any living things on other planets?

—I have no idea. Maybe we can know more about that in the future.

   A. Is   B. Are   C. Has   D. Have

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() 1. We all know that plants can oxygen.

   A. produce   B. want   C. need   D. develop

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4. Walk a short (距離) and there you are.

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() 4. —— A person’s life is like a road lots of difficulties.

—Yes,so we need positive energy.

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科目：初中英語 來源： 題型：

The journey to the Moon is the first step towards space exploration. The distance between the Moon and the Earth is very short indeed when compared with the distances between the Earth and other planets. Mars,the nearest planet to the Earth,is millions of miles away!Travelling to the planet will be man's next aim. Such travels will be more challenging than the trip to the Moon and certainly more adventurous.

Two American spaceships,Vikings 1 and 2,landed on Mars trying to discover whether that planet has any life on it. So far the sign of life on Mars has neither been confirmed (確認(rèn)) nor been ruled out Russians have discovered that the surface of Venus (金星) is so hot that it is almost certain that there is no life there. Also the atmosphere of Venus is extremely dense (稠的) and the pressure is nearly a hundred times greater than that of the Earth’s atmosphere.

Scientists believe man may find planets which have the same conditions as those we have on the Earth,but man should realize the Earth will be their only home for a long time and begin to love and care for it.

() 1. According to the passage,travelling to Mars will be.

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   B. far more exciting and dangerous

   C. man’s final aim

   D. man’s first step

() 2. Which of the following is NOT true?

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   B. everything needed is provided by the Earth

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科目：初中英語 來源： 題型：

1. We should try our best to prevent water (pollute) because people can’t live without water.

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