题目内容：
[交际用语]- Is that seat taken? - _________
A Please don't worry. B I don't think so C Why not? D It's very nice
参考答案：
答案解析：
选择题：[交际用语]- Is that seat taken? - _________
- 题目分类： 大学英语B级
- 题目类型：选择题
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[交际用语]- What does Peter do?- _________
[交际用语]- What does Peter do?- _________
[交际用语]- What's the date today?- _________
[交际用语]- What's the date today?- _________
[交际用语]- May I take your order now? - _________
[交际用语]- May I take your order now? - _________
挣值法主要是通过分析项目成本实施与（ ）之间的差异，从而判断项目实施费用、进度绩效的一种方法。 A．项目进度目标期望B．项目成本目标计划C
挣值法主要是通过分析项目成本实施与（ ）之间的差异，从而判断项目实施费用、进度绩效的一种方法。 A．项目进度目标期望B．项目成本目标计划C．项目成本目标期望D．项目成本节约
[交际用语]- This is a challenging job. Who wants it? - _________
[交际用语]- This is a challenging job. Who wants it? - _________