A. as 49 times big as B. 49 times as bigger as
C. 49 times as big as D. as big as 49 times
A.more longer B.not longer
C.much more longer D.many more longer
A、the worst B.worse C.the worse D.worst
A.good B.better C.best D.the best
A. slowly enough B.enough slowly
C.fast enough D.enough fast
A. money
B. book
C. pens
D. cats
A. Where
B.Who
C. When
D. How
A. any
B. many
C. much
D. some
A. any
B. many
C. much
D. some
A. 体温恒定 B. 体表被毛 C. 胎生哺乳 D. 牙齿分化
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