Read the text. choose the correct word a-c to complete the gaps. astronomy is one of the oldest and most (1) …….. sciences in the world. space has been studied only for (2)………… years. nowadays more and more people are warming to learning astronomy. people wonder if there is life (3) ………. other planets. the powerful telescopes search for (4) ………. similar to the earth. scientists believe there are good chances of finding a planet like (5) ……. somewhere out there in the galaxy. there are billions of stars in the heavens. if one planet is the right distance from one of (6)……. stars, then conditions might be right to support life. people sometimes talk about (7) …… one of the nearest planets to earth. the journey to this planet takes not less the 300 days. this planet is more like earth than any other planet in our solar system. but its (8)….. atmosphere does not block harmful solar radiation. the surface of this planet is (9) …… . sometimes huge dust storms sweep over the plains, darkening the entire planet for days. instead of blue sky, a dusty pink sky hangs (10)………. the planet. the biggest problem is water. there isn’t any water on this planet. without water, life is not possible for humans. people dream to make a human settlement on this planet. 1 a fascinated b fascinating c fascinate 2 a two hundred b fifty c thousands of 3 a on b in c – (no preposition) 4 a planets b stars c galaxy 5 a our b ours c ourselves 6 a that b this c these 7 a venus b mars c mercury 8 a thick b thin c great 9 a dusty and green b dusty and red c clean and green 10 a in b under c over

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