摘要：6． C 7．A 8．C 9．D 10．A
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10月8日，今年16号热带风暴“罗莎”经过我区，风力达到7-9级，并伴有暴雨，持续的狂风暴雨把一些行道树连根拔起，这主要是因为热带风暴具有较大的（ ）
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| A．机械能 | B．内能 | C．重力势能 | D．弹性势能 |
10月8日，今年16号热带风暴“罗莎”经过我区，风力达到7-9级，并伴有暴雨，持续的狂风暴雨把一些行道树连根拔起，这主要是因为热带风暴具有较大的（ ）
A．机械能
B．内能
C．重力势能
D．弹性势能
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A．机械能
B．内能
C．重力势能
D．弹性势能
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如图a是小明和小华在观察“水的沸腾”实验中的情景，对水加热了较长时间后水才沸腾，他们记录的数据如下表所示：
|
时间/min |
… |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
|
水温/℃ |
… |
92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
99 |
99 |
（1）除了图中所给的实验器材外，完成本实验还需要的器材有： 。
（2）请指出他们在实验操作中温度计使用的错误之处： ； 。
（3）在纠正错误后他们继续实验，观察到水沸腾时的现象如图b中的 （填“甲”或“乙”）图，水沸腾时吸收热量，温度 （填不断上升/保持不变/不断下降）。
（4）根据记录在图c中画出水沸腾时温度随时间变化的图像。
（5）试分析水的沸点不是100℃的可能原因（写出一种即可） 。
（6）造成水从开始加热到沸腾的这段时间过长的原因可能是： 。（给出一种原因即可）
（7）通过这次实验小明总结发现了水沸腾必须具备的两个条件，请你帮他写出：
① ；② 。
（8）烧杯和试管内分别装有不同的液体，当用酒精灯不断给烧杯内的液体加热时，最终发现烧杯和试管中的液体都沸腾了，下列结论中正确的是：（ ）
A．烧杯中的液体的沸点比试管中液体的沸点底
B．烧杯中的液体的沸点比试管中液体的沸点高
C．烧杯中的液体的沸与试管中液体的沸点相等
D．以上三种情况都有可能.
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There was a boy who was sent by his parents to a boarding school (寄宿学校). 36 being sent away, this boy was the 37 student in his class. He was at the top in every 38 always with high marks.
But the boy changed after 39 home and attending the boarding school. His grades started 40 . He hated being in a 41 . He was lonely all the time. And there were especially dark times when he 42 committing suicide (自杀). All of this was because he felt 43 and no one loved him.
His parents started 44 about the boy. But they even did not know what was 45 with him. So his dad decided to travel to the boarding school and 46 him.
They sat on the bank of the lake near the school. The father started asking him some casual questions about his classes, teachers and 47 . After some time his dad said, “Do you know, son, why I am here today?”
The boy answered back, “To 48 my grades?”
“No, no,” his dad replied. “I am here to tell you that you are the most 49 person for me. I want to see you 50 . I don’t care about grades. I care about you. I care about your happiness. YOU ARE MY LIFE.”
These words 51 the boy’s eyes to be filled with tears. He 52 his dad. They didn’t say anything to each other for a long time.
Now the boy had 53 he wanted. He knew there was someone on this earth who cared for him deeply. He 54 the world to someone. And today this young man is in college at the top of his class and no one has ever seen him 55 !
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But the boy changed after 39 home and attending the boarding school. His grades started 40 . He hated being in a 41 . He was lonely all the time. And there were especially dark times when he 42 committing suicide (自杀). All of this was because he felt 43 and no one loved him.
His parents started 44 about the boy. But they even did not know what was 45 with him. So his dad decided to travel to the boarding school and 46 him.
They sat on the bank of the lake near the school. The father started asking him some casual questions about his classes, teachers and 47 . After some time his dad said, “Do you know, son, why I am here today?”
The boy answered back, “To 48 my grades?”
“No, no,” his dad replied. “I am here to tell you that you are the most 49 person for me. I want to see you 50 . I don’t care about grades. I care about you. I care about your happiness. YOU ARE MY LIFE.”
These words 51 the boy’s eyes to be filled with tears. He 52 his dad. They didn’t say anything to each other for a long time.
Now the boy had 53 he wanted. He knew there was someone on this earth who cared for him deeply. He 54 the world to someone. And today this young man is in college at the top of his class and no one has ever seen him 55 !
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