It can be inferred from Paragraphs 4 and 5 that______.
A. we can see other people"s life through windows
B. it"s easy to learn about distant friends over the network
C. writing on paper doesn"t exist any longer
D. opening photo cards gives us the satisfaction of peace
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When could software developers get prototypes of the spectacles？
A. In late 2012.
B. In early 2013.
C. In late 2013.
D. In early 2014.
What should we do so as not to make our speech silly？
A. To use words that can move men to tears.
B. To choose words with care and accuracy.
C. To become a master of words.
D. To use words which sing like music.
According to the passage, what is the beginning of "with us" era？
A. The invention of the first Compaq.
B. The use of desktop PCs.
C. The launch of iPhone.
D. The use of Watson computing.
What is the main idea of this passage？
A. The sea ice changes in Antarctic are different from those in Arctic.
B. Global warming influences the ice coverage at both poles.
C. Maps of sea ice movements around Antarctica and Arctic were made.
D. The melting of Arctic sea ice is faster than the expanding of Antarctic sea ice.
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