One way of producing cold is to allow ______ . [br] The temperature of a gas ___

游客2023-10-07  19

问题 One way of producing cold is to allow ______ . [br] The temperature of a gas ______ .

选项 A、changes with the width of a hole
B、sometimes depends on how close together its molecules are
C、has something to do with the molecules that makes it up
D、is always connected with the speed at which its molecules go

答案 D

解析 本题题干问与气体温度有关的内容。原文第3段第6和第7句话指出分子运动速度变慢,气体温度就变冷,分子速度越慢,气体温度越冷。因此选项D. is always connected with the speed at which its molecules go是正确答案。
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