单选题：__________in the company for three years, Mark has become ex

题目分类：英语三级A级
题目类型：单选题
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题目内容：

__________in the company for three years, Mark has become experienced in business negotiations. A． Having worked
B． Have been working
C． Have worked
D． Worked

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What activities was he involved in when he had his practice

What activities was he involved in when he had his practice in the company?A who

分类：英语三级A级题型：单选题

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（　　）机器操作员（　　）输送带

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计算机断电以后，其中信息会丢失的存储器是（　　）。

分类：英语三级A级题型：单选题

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With such a short time(1eave)__________，it's impossible for

With such a short time(1eave)__________，it's impossible for US to finish this co

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会计岗位可以包括（　）。

分类：英语三级A级题型：单选题

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