GRE考试

【单选题】
A．controversial but irrefutable
B．speculative and unprofitable
C．uncomplicated and traditional
D．original but obscure
E．(E) sadly lacking in elaboration

网考网参考答案：C
网考网解析：
To the author the concept is both simple and traditional, dating as it does from Newton's time. 查看试题解析出处>>