—What do you think of the 3-D printer?—It’s great although it still needs further       .
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A
arrangement
B
education
C
information
D
development
推荐题目
 In the small zoo, there is a _______ elephant.
#28135
A
African
B
Asian
C
Australian
D
European
Han Mei and Lucy are good friends. They are in ____________.
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A
Class Three
B
Three Class
C
Class Third
D
Third Class