（A） were first aired on evening radio in the 1920's， they had moved to the daytime hours of the 1930's
（B） were first aired on evening radio in the 1920's， they were moved to the daytime hours in the 1930's
（C） were aired first on evening radio in the 1920's， moving to the daytime hours in the 1930's
（D） were aired first in the evening on 1920's radio， they moved to the daytime hours of the 1930's
（E） aired on evening radio first in the 1920's they were moved to the 1930's in the daytime hours
6. Scientists have suggested that once every 10 million years or so a truly colossal object from space cuts though the atmosphere and slams into Earth， sending up a global pall of dust that blots out the Sun， alters the climate， and changes the courses of revolution killing off many plant and animal species.
（A） sending up a global pall of dust that blots
（B） which sends up a global pall of dust that blots
（C） thus sending up a global pall of dust to blot
（D） thereby sending up a global pall of dust to blot
（E） and that sends up a global pall of dust， blotting
7. Florida will gain another quarter-million jobs this year along， many of them in high-paying fields like electronics and banking， making the state's economy far more diversified than ten years ago.
（A） high-paying fields like electronics and banking， making the state's economy far more diversified than
（B） high-paying fields like electronics and banking， and making the state's economy far more diversified than its economy
（C） high-paying fields such as electronics and banking， to make the state's economy far more diversified than
（D）such high-paying fields as electronics and banking， making the state's economy
答案：1.E 2.C 3.A 4.A 5.B 6.A 7.D
