In the last few years our communications network has been growing at a very fast pace. The old fixed-line telephone has been rep

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问题     In the last few years our communications network has been growing at a very fast pace. The old fixed-line telephone has been replaced by mobile phones, Short Message Service (SMS), e-mail and instant messaging (IM). And there are other new ways of communicating related to the Internet, such as blogs.
    A recent study in Switzerland shows the different roles that communication methods can play. Stefana Broadbent is a scientist at Swisscom, Switzerland’s largest telecoms company. She studied several hundred consumers and their reactions to telecommunications. She found people were very good at choosing the best technology for each situation.
    "IM is used to tell you I miss you; e-mail is to organize our dinner; voice mail is to say, I’m late; and SMS to continue our talk on the way, "says Broadbent, joking a little.
   Landline phones are an open channel. That means people use them to talk about nonprivate things. That’s because other family members or colleagues have access to the phone.  
Why does the author think that landline phones are an open channel?

选项 A、Because that means people use them to talk about non-private things.
B、Because people use them to talk about private things.
C、Because other family members or colleagues have access to the phone.
D、Because all of the people are very eager to hear it.

答案C

解析 细节题。题干意为“为什么说固定电话表示着一种公开渠道?”从That’s because other family members or colleagues have access to the phone.因为家里其他人或者是同事们也都听得到.可以找到答案。
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