• 2021-04-14
    If companies use the patent system to ________ other start-ups, less innovation will happen and the whole industry may lag behind.
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      One reason is that some countries still ______ behind.  A: limit B: labour C: lab D: lag

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      We live in an age when we may work for_______during our lifetime. A: one company B: two companies C: less than three companies D: more than one company

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      In the use of colors, the( )color may be used chiefly and other colors may be used supplementally,or balanced colors may be used. A: black B: yellow C: blue D: green

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      中国大学MOOC: In the object-oriented system, we use relationship to express that a larger “whole” class includes one or more smaller “partial” classes.

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      Match the companies to the industry sector they belong to.