B．to express the owners’ anger to the thief

　　C．to remind the thief of this conscience

　　D．to make the thief give up his mind

　　73．Different from other security software，Retriever can ________.

　　A．record the stealing process

　　B．help recognize the lost laptop

　　C．lock down the computer remotely

　　D．send a spoken message

　　74．One function of the program is that it allows the owner to ________ at a distance.

　　A．change some access details for switching on the laptop

　　B．turn on the laptop by using the original password

　　C．operate the laptop by means of an alternative password

　　D．erase the information kept in the stolen laptop

　　75．Which of the following can best summarize the main idea of the passage?

　　A．With no Retriever，thousands of laptops are stolen every year.

　　B．A new software provides a means to reduce laptop theft.

　　C．Retriever has helped to find thieves and lost computers.

　　D．A new program offers a communication platform with the thief.

　　【答案解析】

　　72．选择B。根据上下文正确理解词语和句子。

　　73．选择D。由第二段第一句The program allows users to display alerts on the missing computer’s screen and even to set a spoken message.可得知。

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