摘要:VI. 完形填空. What is the sky? Where is it? How high is it? What lies above it? These questions are hard 31 . Is the sky blue? The sky 32 no colour. We know that there is air around 33 earth. When planes fly, they need 34 to lift their wings. Planes can not fly too 35 , 36 when they go higher, the air get thicker. If we go up about 1200 kilometres 37 the earth, we find there is 38 air. Maybe we can 39 all of our questions now. The sky is the space. 40 this space there is only the moon and all the other stars. ( )31. A. answer B. to answer C. answered D. answers ( )32. A. is B. has C. are D. have ( )33. A. the B. an C. / D. a ( )34. A. water B. us C. air D. oil ( )35. A. near B. far C. high D. long ( )36. A. but B. and C. because of D. because ( )37. A. to B. near C. above D. away ( )38. A. no B. not C. no any D. any ( )39. A. answer B. ask C. have D. get ( )40. A. On B. At C. Of D. In

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