A．the increasing concentration is certain to hurt consumers
B．World Com serves as a good example of both benefits and costs
C．the costs of the globalization process are enormous
D．the Standard Oil trust might have threatened competition

A．An ounce of wisdom is worth a million tons of books.
B．Death makes a contract with everyone, but no one can break it.
C．Look on all that appears commonplace as something hard to come by, and we’ll all the more treasure it.
D．Own one’s life and know how to treasure it, and this is and happy and beautiful life.