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 copper ...

4.His mind had grown suddenly (numb) seconds seemed hours. A. acute B. insensitive C. indifferent D. painful ...

12.New measurements taken from sleeping people explain,at least in part,why dreams tend to have such bizarre but vivid storylines.The findings deal a blow to the Freudian interpretation of dreams but leave open the possibility that some use...

14.In the late 1920s my mother ran away from home to marry my father.Marriage,if not running away,was expected of 17-year-old girls.By the time she was 20,she had 2 children and was pregnant with a third.5 children later,I was born.And this...

8."I can't take all the (bending) any longer,"she said. A. standing B. working C. stooping D. sitting ...

2.Surprisingly,she'd slept,though her mind was (churning) when she went to bed. A. a total blank B. agitated C. confused D. sharp ...

4.You don＇t have to set up a foundation or spend hours raising money to help the environment.Joey Gordon-Levitt,16,does his part by simply collecting his newspapers,plastic,and cans-and have them recycled."Everyone should recycle,"the teen...

18.Although Anne is happy with her success she wonders _____ will happen to her private life. A. that B. what C. it D. this ...

12.Over a third of the population was estimated to have no _______ to the health service. A. assessment B. assignment C. exception D. access ...

6.Between 1974 and 1997，the number of overseas visitors expanded ______ 27%. A. by B. for C. to D. in ...