In a new study of African elephants,researchers have    four distinct characters that are among a group.
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A
convinced
B
identified
C
differed
D
existed
推荐题目
In that terrible earthquake,      who were killed was more than 60,000.
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A
a large number people
B
the number of people
C
a number of people
D
many people
At Christmas people _________ us to help the poor.
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A
appeal to
B
aim at
C
get into
D
decide on