问题
选择题
One advantage of G3 mobiles is that it has become a very useful tool for________daily communication.[ ]
A. taking on
B. speeding up
C. working on
D. making up
答案
答案：B
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One advantage of G3 mobiles is that it has become a very useful tool for________daily communication.[ ]
A. taking on
B. speeding up
C. working on
D. making up
答案：B
