Question

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. _______

Answer 1

37. can/may   38. to know   39. their    40. to   41. that

42. to get    43. gases   44. at   45. moving   46. hottest