衡中同卷2023-2022分科综合卷 新教材化学一

衡中同卷2023-2022分科综合卷 新教材化学一,衡水金卷先享题2022-2023答案网收集并整理关于衡中同卷2023-2022分科综合卷 新教材化学一得系列试卷及其答案，查看更多2023衡水金卷先享题分科综合卷完整的试卷及其答案请关注WX公众号：趣找答案

以下是关于衡中同卷2023-2022分科综合卷 新教材化学一的相关内容图片展示

1、衡中同卷2023-2022分科综合卷 新教材化学一

2、2023年衡水金卷先享题 分科综合卷 全国乙卷B 化学(一)

3、衡水金卷先享题分科综合卷 新教材2023答案

2.(1)必须相等(1分)(2)AB(2分)(3)2gL(1-c0s(2分)x√(2分)(4)mvo=士mA十mvB(2分)（其他正确表达式同样给分）【解析】(1)根据题意A与B发生正碰，则两球的半径大小必须相等。(2)因为A、B发生正碰，故实验过程要保证P、Q、M、N四点在同一竖直平面内，A项正确；动量的大小需要知道物体的质量，故B项正确；碰撞后，若A球反弹回来，也可以计算出A球碰撞后的速度，故C项错误。(3)根据机械能守恒定律有2mUA2=mgL(1一cos3),解得A=√2gL(1一cos3);由平抛运动规律有x=ut,y=2gt2,解得=xy(4)碰撞后A的速度方向有两种可能性，故验证A、B两球在碰撞过程中系统动量守恒的表达式为mUo=士mUA十mUB。

Rocky Lyons was five years old when his mother, Kelly, was driving along the country road with him. He was asleep on the front seat of their truck, with his feet resting on her lap. As his mom drove carefully down the winding country road, she turned onto a narrow bridge. The truck hit a rock and slid off the road. She tried to bring it back up onto the road by pressing hard on the gas pedal and turning the steering wheel to the left. But Rocky’s foot got caught between her leg and the steering wheel and she lost control of the truck.

The truck fell into a 20-foot ravine（峡谷）. When it hit bottom, Rocky woke up. “What happened, Mama?” he asked. “Our wheels are pointing toward the sky. ”Kelly was seriously wounded and blinded by blood. “I’ll get you out, Mama,” announced Rocky, who had surprisingly escaped injury. He climbed out from under Kelly, slid through the open window and tried to yank（用力拉）his mother out. But she didn’t move.

“Just let me sleep,” begged Kelly, who was out of consciousness. Rocky insisted, “Mom, you can’t go to sleep.”

Rocky managed to push Kelly out of the truck and told her he’d climb up to the road and stop a car to get help. Fearing that no one would be able to see her little boy in the dark, Kelly refused to let him go alone. Instead they slowly moved up to the road. The pain was so great that Kelly wanted to give up, but Rocky wouldn’t let her.

Rocky kept repeating the inspirational phrase, “I know you can, I know you can.” When they finally reached the road, Rocky broke into tears seeing his mother’s torn face clearly for the first time. Waving his arms and shouting, “Please stop!” the boy stopped a truck. His mother was sent to hospital.

It took 8 hours to rebuild Kelly’s face. She looks quite different today—“I used to have a straight long nose, thin lips and high cheekbones; now I’ve got a flat cheeks and much bigger lips”— but she has few scars and has recovered from her injuries.

Rocky’s heroics were big news. Everyone was surprised at this little boy’s power. “It’s not like I wanted it to happen,” The boy explained. “ I just did what anyone would have done. ” “If it weren’t for Rocky, I’d have died,” said his mother.

1.According to the text, Rocky and Kelly _________ .

A. were lost on a country road

B. had limited time to find their way

C. were involved in a truck accident

D. knew little of what happened to them

2.When he woke up, Rocky ___________ .

A. was frightened by his mother’s blood

B. found his mother had fallen asleep

C. was stuck against the door of the truck

D. found the car was turned over

3.What happened to Kelly at last?

A. She passed away.

B. She survived and recovered from injuries.

C. She became a hero.

D. She had a different life.

4.What is the best title for the text?

A. A Boy and His Mother

B. How to Behave Well？

C. I Think I Can

D. Nothing is Lost

试题答案

1.C

2.D

3.B

4.C

【解析】

试题分析：这是一篇记叙文阅读。文章主要讲的是5岁的儿子Rocky和妈妈Kelly遭遇了车祸，5岁的儿子凭借惊人的毅力救了自己母亲的故事。

1.1】细节理解题。由文章第二段第一句“The truck fell into a 20-foot ravine（峡谷）”可知，卡车掉下了20米深的峡谷，所以Rocky和Kelly遭遇了车祸。故选C。

2. it hit bottom, Rocky woke up. “What happened, Mama?” he asked. “Our wheels are pointing toward the sky.”，当汽车撞倒底部时，Rocky醒来了。他问“妈妈，发生了什么？我们的车轮正指向天空呢，可知，当Rocky醒来时，发现车字翻过来了。故选D

3. mother was sent to hospital. ”和第六段最后一句“she has few scars and has recovered from her injuries.”，他的妈妈Kelly被送到了医院，现在她脸上有一点点疤痕并且收的伤都已经恢复了，可知，Kelly得救了并且已经康复了。故选 。B

4.C。

考点：考查记叙文阅读。

….