使用V形架检测对称键槽的精度（）用顶尖的检测的精度。
A、＞
B、＝
C、＜
D、≤
参考答案：C
二战初期，英法美等帝国主义国家面对法西斯国家侵略遭到巨大失败，你对此有何见解？
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UNICFE wants to make _______ world _______ better place for children. [ ]
A. the; the
B. /; a
C. the; /
D. the; a
