How did the scientists do the test? [br] What does the word "reduce" mean in the

游客2025-07-02 14

问题 How did the scientists do the test? [br] What does the word "reduce" mean in the last sentence?

选项 A、增加
B、放弃
C、减少

答案 C

解析由本段第三句可推断出答案。

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