12、Americans eat ________ vegetables per person today as they did 50 years ago.

A.more than twice                                  B.more than twice as many                     

C.a(chǎn)s twice as many                        D.twice as many as

12、B

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Americans eat ________ vegetables per person today as they did 50 years ago.

A.more than twice                                  B.more than twice as many                     

C.a(chǎn)s twice as many                        D.twice as many as

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