1. The difference between 3G and 3GS lies mainly in ________.

　　A. their colors

　　B. their outside shapes

　　C. their screens

　　D. their batteries and speeds

　　2. What can we infer from the second paragraph about 3G?

　　A. It offers an easy access to the web pages.

　　B. It has two versions: either black or white.

　　C. In spite of slow speed, it functions the same as 3GS.

　　D. It has the latest iPhone software installed.

　　3. What does MMS probably refer to in the passage?

　　A. Multi-media Messaging Service.

　　B. Membership Management System.

　　C. Major Messaging Software.

　　D. Multi-Media Software Store.

　　4. What is the best title of the text?

　　A. 3GS is a must nowadays.

　　B. 3GS is the best choice nowadays.

　　C. Is 3GS a must nowadays?

　　D. Is 3GS worth your money?

　　参考答案1—4、 DBAC

　　【阅读理解】科普知识类

　　阅读下列四篇短文，从每小题后所给的A,B,C或D四个选项中，选出最佳选项。

　　The 2016 London Olympics had enough problems to worry about. But one more has just been added—a communications blackout caused by solar storms.

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