单选题：Which of the following statements about the telephone of the

题目内容：
Which of the following statements about the telephone of the future is NOT true? A．It will be much more complex than the telephone we use today.
B．It will be more convenient to use than today's telephone.
C．You will be able to dial great distances.
D．There will be no busy lines.

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答案解析：

Sn为等差数列{an}的前n项和，S2=S6，a4=1，则a6=__________

Sn为等差数列{an}的前n项和，S2=S6，a4=1，则a6=__________

分类：公共英语五级  题型：单选题
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It can be inferred from the text that the retail price of pe

It can be inferred from the text that the retail price of petrol will go up dram

分类：公共英语五级  题型：单选题
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建设工程合同分析的主要内容有（　　）。

建设工程合同分析的主要内容有（　　）。A．合同的法律基础 B．承包人的主要任务 C．发包人的主要责任 D．违约责任 E．工程项目的经济效益研究

分类：公共英语五级  题型：单选题
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