——What's your problem ——I have lost sight of my morn and dad, but just I saw them ______ in front of me.
A) were walking
B) to have walker
C) walk
D) walking
The project is ______ complicated (复杂的) that they can not be finished without a computer.
A) such
B) too
C) so
D) rather
Access数据库中的数据表窗体的主要作用是_______。
A. 存放数据，便于读取
B. 将数据捧序后，加快查询速度
C. 作为一个窗体的子窗体
D. 显示数据、删除、更新数据
恶性骨瘤最有效的治疗方法是
A. 手术
B. 放疗
C. 化疗
D. 中药治疗
E. 免疫治疗
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