A

B

1．recognize

a．order

2．retell

b．the collective aspect of the set of characteristics by which a thing is definitively recognizable or known

3．identity

c．of present or recent times, contemporary

4．standard

d．tell again, in a different way or in a different language

5．command

e．be able to identify or know sb．/sth．again

6．modern

f．things used as a test or measure for weights, lengths, quality, purity, etc．