The _______age of the students in our class is about 19.
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A
common
B
average
C
usual
D
ordinary
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This cake is ________ that one. Which of the following is wrong? 
#20368
A
three times the size of
B
three times so big as
C
three times bigger than
D
one third as big as
The lady said she would buy a gift for her daughter with the         .
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A
20 dollars remained
B
left 20 dollars
C
20 dollars leaving
D
remaining 20 dollars
Einstein’s Theory of Relativity is so ________that most of us can not understand it.
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A
controversial
B
abstract
C
appropriate
D
universal