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Waves of red light are about ________ as those of blue light.


  1. A.
    as twice
  2. B.
    so twice
  3. C.
    twice as long
  4. D.
    twice long
C
倍数的三种表达法:①倍数(three times)+as+adj.(adv.)+as+B ②倍数(three times) the size/the length/the width/the height+of+B ③倍数(three times)+adj比较级/adv.比较级+than+B如:The earth is 49 times the size of then moon.He has three times more money than I have.
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3.The __________ (美丽)  of Venice consists largely in the style of its ancient buildings. 

4.We raised money for the ____________ (目的) of helping the children in poor areas.

5.During the 3-hour concert, Morissette used a lot of material from her __________ (获奖的) album “Jagged Little Pill”.

6.Everyone’s fingerprints are u_________, which can make it easier for police to find criminals.

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