问题
选择题
There ___________ a ruler, a pen and some pencils in the pencil-box. They're ___________.[ ]
A. are, her
B. are, she
C. is, hers
D. are, hers
答案
答案：C
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There ___________ a ruler, a pen and some pencils in the pencil-box. They're ___________.[ ]
A. are, her
B. are, she
C. is, hers
D. are, hers
答案：C
根据计时观察资料，测得工人工作时间见表2-1，则其作业时间与规范时间分别为( )min。
表2-1
| 基本工作时间 | 辅助工作时间 | 准备与结束工作时间 | 不可避免中断时间 | 休息时间 |
| 72min | 11min | 15min | 8min | 10min |
A．98；18
B．83；33
C．83；18
D．106；10