Atoms are like bricks because ______ . [br] Atoms in an object move ______ .A、al

游客2023-10-07  13

问题 Atoms are like bricks because ______ . [br] Atoms in an object move ______ .

选项 A、all the time
B、whenever it is hot
C、when it is melted
D、when it is heated

答案 A

解析 本题题干问“一个物体内部原子是如何运动的”。原文第2段第4句话指出原子是在不断地运动的。因此选项A. all the time是正确答案。
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