单项选择题

The European Union countries were once worried that they would not have ().

A. sufficient
B. efficient
C. potential
D. proficient

<上一题 目录 下一题>
热门 试题

问答题
Present situation about doing research online 2) Advantages for online research 3) Disadvantages for online research.
单项选择题
80().

A. calculation
B. assignment
C. budget
D. effect
相关试题