题目内容
语法填空（共io小题；每小题i分，满分io分）
Stop reading for a minute and think about what you see when you look up in the sky on a clear night. You 37.____________ see many stars. Long long ago, farmers watched some stars 38. ___ (know) when to plant
their crops. Travellers did so to find 39. _ ways in the dark. Today stars are very important 40.___ some people.
Scientists find out that most stars are very big. In fact some stars are so far away from us 41.____________ it will take millions of light years 42. ____________(get) to them even by spaceship.
Another thing we know today about stars is that some are made up of hot gases. The 43. ___ (gas) are so hot that they send out light. If you often look up 44. ___ a star carefully at night, you may find it twinkles sometimes. As you may understand, light from a star must shine through the air before you can see the star. Air is always 45.____________ (move), and it makes light from the star move. When the light moves, it makes the star twinkle. Stars also have different colours. To our surprise,
the cool stars are red and the 46. ____ (hot) ones are blue-white.
37. ___ 38. ______ 39. _______ 40. ______ 41. _______
42. ___ 43. ________ 44. ______ 45. ______ 46. _______
37. can/may 38. to know 39. their 40. to 41. that
42. to get 43. gases 44. at 45. moving 46. hottest
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