如图所示，带有活塞的气缸中封闭一定质量的气体（不考虑分子势能_爱下问搜题

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问题选择题

如图所示，带有活塞的气缸中封闭一定质量的气体（不考虑分子势能）将一个热敏电阻（电阻值随温度升高而减小）置于气缸中，热敏电阻与气缸外的欧姆表连接，气缸和活塞均具有良好的绝热性能，下列说法正确的是（　　）

A．若发现欧姆表读数变大，则气缸内气体压强一定增大

B．若发现欧姆表读数变大，则气缸内气体内能一定减小

C．若拉动活塞使气缸内气体体积增大，则欧姆表读数将变小

D．若拉动活塞使气缸内气体体积增大，则需加一定的力，说明气体分子间有引力

答案

答案：B

选择题

以下物质间的每步转化通过一步反应能实现的是[ ]

①Al→Al₂O₃→Al(OH)₃

②Fe→FeCl₂→Fe(OH)₂

③S→SO₃→H₂SO₄

④N₂→NO→NO₂

A．①②

B．③④

C．②④

D．①③

完形填空

完形填空：（30分）
One morning all the employees reached the office as usual. And on the wall they saw a big 36 on which it was written：Yesterday, the person who has been 37 your growth in this company passed 38 . We invite you to join the funeral prepared in the 39 .
In the beginning，they all got 40 for the death of one of their colleagues. 41 after a while they started getting 42 to know who was the man that limited the growth of his colleagues and the company itself.
The 43 in the gym was such that security agents(保安)were 44 to control the crowd within the room. The more people reached the coffin, the more the excitement 45 up. Everyone whispered to each other:“ 46 on earth is this guy?”
One by one the excited employees got closer to the coffin, and when they 47 inside it, they 48 became speechless. They stood nearby the coffin, shocked and in 49 , as if someone had 50 the deepest part of their soul.
There was a 51 inside the coffin；everyone who

looked inside it could see himself, There was also a sign next to the mirror that 52 : there is only one person who is 53 to set limits to your growth：IT IS 54 !!!!!! Your life doesn’t change when everyone around you changes. Your life changes when YOU change，when you go beyond your limiting beliefs inside. Don’t be afraid of 55 ；build yourself and your reality. It’s the way you face life itself that makes the difference!

A．encouraging

D．meeting room