Given the folowing classes which of the following will compile without error？（)interfac

A.o1=o2;

B.b=ob;

C.ob=b;

D.o1=b;

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第3题

francis bacon , one of the most important philosophers of england , was born in london and educated at cambridge university .when he was only 15, he went to france to work for the english ambassador（大使）.two years later he went up to england to study law .at the age of twenty － three he was elected to parliament（议会）.his ideas about how scientists should study things in nature help to bring about the modern way of thinking , caled the scientific method .

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A.Francis Bacon was the most important philosopher of England .

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B.his books

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