单项选择题

Which is the reaction taken to cope with Google's challenge

A．Liking pages by themes.
B．Combing the rivals of Google.
C．Developing spreadsheets with better functions.
D．The addition of humanistic consideration to arithmetic rules.

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单项选择题

What is the possible meaning of aikido in Paragraph 2

A．Defending oneself by making use of the rival's strength.
B．Attacking the obvious weakness of the opponent.
C．Observing the power contrast between the two sides.
D．Temporary compromising in attempt to launch a violent fight-back.