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(   ) 4. ―Is this bag heavier than that one?

      ―No,it's only_______ that one.

A.  as heavy as three fifths

B.  as heavy as three fifth

C.  three fifths as heavy as

D.  three fifth as heavy as

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(   ) 1. When people talk about the unknown things,which interests them most?

A. UFOs. B. Aliens.

C. Aliens' technology. D. Outer space. 

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