GRE考试

【单选题】The primary function of the passage as a whole is to
A、introduce a new explanation of a physical phenomenon
B、explain how a physical phenomenon is measured and described
C、illustrate the limitations of applying mathematics to complicated physical phenomena
D、indicate the direction that research into a particular physical phenomenon should take
E、clarify the differences between an old explanation of a physical phenomenon and a new model of it
网考网参考答案：B
网考网解析：
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