10.??Copper(铜)was the first metal that man learned to make.In some mountainous lands there were rocks streaked with green minerals.One day some rocks were accidentally heated by a roaring fire.When the fire burned low,little beads of coppe...

16.??The 12th lunar month in Chinese is called layue(the month to worship all the deities).The 8th day of the 12the lunar month is the Laba Festival.It is treated as the beginning of the Chinese holiday season.After the Laba Festival,people...

20.??She ought to stop work；she has a headache because she ______ too long. A. has been reading B. had read C. is reading D. read ...

15.??Floods cause billions of dollars worth of property damage _______. A. relatively B. actually C. annually D. comparatively ...

10.??We are all for your proposal that the discussion_____. A. be put off B. was put off C. should put off D. is to put off ...

5.??The words of his old teacher left a _____ impression on his mind.He is still influenced by them. A. long B. lively C. lasting D. liberal ...

20.??John Dewey believed that education should be a preparation for life, that a person learns by doing, and that teaching must _______ the curiosity and creativity of children. A. seek B. stimulate C. shape D. secure ...

15.??By 1929, Mickey Mouse was as popular _______ children as Coca-Cola. A. for B. in C. to D. with ...

10.??Does everyone on earth have an equal right _______ an equal share of its resources? A. by B. at C. to D. over ...

5.??Ann never dreams of _______ for her to be sent abroad very soon. A. there being a chance. B. there to be a chance C. there be a chance D. being a chance ...