单项选择题

What is the central idea of this passage

A．Google dominates the on-line search market.
B．Google is confronted with stiff competition.
C．Google manages to seize more market share in software business.
D．Google's growth threatens companies like Microsoft to a large extent.

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单项选择题Which of the statement is NOT true about Expert Rank

A．It searches information prevailing in experts on particular topics.
B．It even outdoes Google.
C．Ranking is seldom counted by the page's popularity.
D．Relevant information can be effectively and efficiently sought.

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.