Einstein worked out the theory of relativity with paper and pencil, but could on

游客2025-01-29 14

问题 Einstein worked out the theory of relativity with paper and pencil, but could only speculate on the true nature of subatomic particles.

选项 A、cultivate
B、prophesy
C、expect
D、guess

答案 D

解析 speculate on(推测，考虑)，句意：爱因斯坦虽然用纸和笔研究出了相对论，但只能推测亚原子粒子的真实特性。cultivate(培养，陶冶，耕作)；prophesy(预言，作为先知)；expect(认为，期待，指望)；guess(推测，猜测)。所以选项D为答案。

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