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  • 1. 阅读理解

        All over the world the need for laptops and smartphones increases each year. Networks have been part of our life. Probably everyone with a portable device(移动设备) has once logged on to a public Wi-Fi network without paying for it, while they are having a coffee, on a train, in a shopping mall or at a hotel. However, is this kind of public Wi-Fi network safe?

        Some networks are better protected than others because encryption (加密) methods are used. Therefore, they are safer than others. But a survey in 2015 showed that more than 950 million records were not protected, including addresses, emails, birth dates, phone numbers, passwords and so on. These open Wi-Fi networks are really not safe, because it is very easy for hackers (黑客) to break into the operating system and get people's private information.

        Most smartphones and laptops, by themselves, search and connect to Wi-Fi networks. They usually prefer a network with a connection that has been used before. Hackers' devices are able to record these searches and look like the trusted Wi-Fi networks. When these smartphones and laptops log on to the networks which are not real, hackers can easily steal their private information.

        So next time, when we want to use our laptops or our smartphones in public places which offer free Wi-Fi networks, please think it twice on take safe measures before using them.

    1. (1) Why do people like to log on to a public Wi-Fi network?
      A . It can provide useful information. B . The owner of the network is polite. C . It is free. D . It is safe.
    2. (2) We can learn from the passage that __________.
      A . not all the public Wi-Fi networks are safe B . none of the public Wi-Fi networks is safe C . in 2015 more than 950 million records were protected D . there is no way to protect our private
    3. (3) Hackers would probably get the following EXCEPT __________ when we connect our laptops or smartphones to a public Wi-Fi network.
      A . our birth dates B . our passwords C . our phone numbers D . our smartphones
    4. (4) Which of the following can be the best title for this passage?
      A . Don't use public Wi-Fi networks B . Why are the public Wi-Fi networks a possible danger? C . We needn't protect our private information D . Why do hackers break into the operating system?

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