单项选择

• 1、

  It was difficult to set a date which was convenien

• 2、

  In 1861 it seemed inevitable that the Southern sta

• 3、

  United States Navy Admiral Alfred Mahan wrote many

• 4、

  I didn't help him. I would have however didn't hav

• 5、

  Data from Voyager II have presented astronomers wi

• 6、

  The union representative put across her argument v

• 7、

  We derive knowledge mainly from books.（　）

• 8、

  You don't need to carry large amounts of cash; act

• 9、

  He has become a celebrity because of his wonderful

• 10、

  It's impolite to cut in when two persons are holdi

• 11、

  Almost everyone at the meeting has different views

• 12、

  I wonder what your aim in life is（　）.

• 13、

  You look smart in the new suit.（　）

• 14、

  The polar regions are generally covered with ice a

• 15、

  We have got to abide by the rules.（　）