浅谈倍数的表达法之二
e long as
D. twice as long as
5. （ MET 1990 ） After the new technique was introduced， the factory produced _______ tractors in 1988 as the year before.
A. as twice many
B. as many as
C. as twice as many
D. twice as many
Key： 1 － 5 DBCDD
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