2. 外语
  3. What can be inferred from the first paragraph? What does the word "encryption" (Line 4, Para. 4) possibly mean?

What can be inferred from the first paragraph? What does the word "encryption" (Line 4, Para. 4) possibly mean?

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问题 What can be inferred from the first paragraph?
What does the word "encryption" (Line 4, Para. 4) possibly mean?
选项 A、Using of various signals for communication.
B、Writing message or information in secret code.
C、Automatic ally operated positioning system.
D、Accuracy checking device.
答案B
解析 由题干中的encryption定位到原文第四段末句Some are more precise than others，...to prevent unauthorized users from accessing them．[精析] 原文末段的尾句提到，有的还有不同程度的encryption用来防止未经授权的用户进入。联系常识可推测B)“将信息写成密码”也即“加密”常用以解决这一问题，故为正确答案。[排除干扰] A)“运用多种信号交流”、C)“定位运行系统的自动联系”和D)“准确性检测技术”均不能达到原文prevent unauthorized users from accessing them(防止未经授权的用户进入)的目的，且均未在原文出现，都排除。
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大学英语四级

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