18. (1)如右图一所示的实验装置:小球A沿竖直平面内的轨道滑下.轨道末端水平.A离开轨道末端时撞开轻质接触式开关S.被电磁铁吸住的小球B同时从同一高度自由下落.改变整个装置的高度H做同样的试验.发现位于同一高度的A.B总是周时落地.该实验现象说明了A球在离开轨道后 ( ) A.水平方向的分运动是匀速直线运动 B.水平方向的分运动是匀加速直线运动 C.竖直方向的分运动是自由落体运动 D.竖直方向的分运动是匀速直线运动 (2)在某次实验中.测得小球A的平抛运动轨迹如图二所示.已知O点是平抛运动的出发点.x1=32cm,y1­=20cm.,y2=46cm.可计算出x­2= cm. 查看更多

 

题目列表(包括答案和解析)

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III. 短文改错(共10小题,计10分)此题要求改正所给短文中的错误。对标有题号的每一行作出判断:如无错误,在该行右边边横线上画一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:

此行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。  

此行缺一个词:在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。此行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。注意:原行没有错的不要改。

Ken is a young man and have a big dog and a small     1.____________  

car. Last Sunday he did some shopping for hour in a     2____________ 

shop and then ran out and jump into a car. His dog     3.____________ 

came after him, but it jumped into the next one.      4.____________ 

Ken saw it and shouted it, but the dog still stayed          5.____________

in that car. Ken puts his key into the lock of the car,         6.____________

but the key couldn’t turn on.. Ken looked at the car        7.____________

again. It was not him! He was in the wrong car,         8.____________

when the dog was in the right one! At last the young        9.____________

man was smiled and got into his car with the dog.       10.____________

 

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III. 短文改错(共10小题,计10分)此题要求改正所给短文中的错误。对标有题号的每一行作出判断:如无错误,在该行右边边横线上画一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:
此行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。  
此行缺一个词:在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。此行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。注意:原行没有错的不要改。
Ken is a young man and have a big dog and a small     1.____________  
car. Last Sunday he did some shopping for hour in a     2____________ 
shop and then ran out and jump into a car. His dog     3.____________ 
came after him, but it jumped into the next one.      4.____________ 
Ken saw it and shouted it, but the dog still stayed          5.____________
in that car. Ken puts his key into the lock of the car,         6.____________
but the key couldn’t turn on.. Ken looked at the car        7.____________
again. It was not him! He was in the wrong car,         8.____________
when the dog was in the right one! At last the young        9.____________
man was smiled and got into his car with the dog.       10.____________

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.

III. 短文改错(共10小题,计10分)此题要求改正所给短文中的错误。对标有题号的每一行作出判断:如无错误,在该行右边边横线上画一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:

此行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。  

此行缺一个词:在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。此行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。注意:原行没有错的不要改。

Ken is a young man and have a big dog and a small      1.____________  

car. Last Sunday he did some shopping for hour in a     2____________ 

shop and then ran out and jump into a car. His dog      3.____________ 

came after him, but it jumped into the next one.       4.____________ 

Ken saw it and shouted it, but the dog still stayed          5.____________

in that car. Ken puts his key into the lock of the car,         6.____________

but the key couldn’t turn on.. Ken looked at the car        7.____________

again. It was not him! He was in the wrong car,         8.____________

when the dog was in the right one! At last the young        9.____________

man was smiled and got into his car with the dog.       10.____________

查看答案和解析>>

短文改错(共10题,每小题1分,满分10分)
此题要求改正所给短文的错误。对标有题号的每一行作出判断:如无错误,在该行右边横线上划一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:
  该行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。
  该行缺一个词:在缺词处加一个漏字符号(^),在该行右边横线上写出该加的词。
  该行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。
  注意:原行没有错的不要改。
Every morning John goes to work by trains. He always                      【小题1】________
buys a newspaper, it helps to make the time pass more quickly.           【小题2】________
One Thursday morning, he turned on the sports page. He wanted                【小题3】________
to see the report about an important football match the night              【小题4】________
before. The repot was such interesting that he forgot to get off           【小题5】________
at his station. He didn’t know it when he saw the sea. He got               【小题6】________
off at the next station, and have to wait long time for a train to 【小题7】________
go back. Of course, he arrived very late at the office.                               【小题8】________
His boss were very angry when John told him why he was late.             【小题9】________
“Work is very more important than football!”                                             【小题10】________

查看答案和解析>>

短文改错(共10题,每小题1分,满分10分)

此题要求改正所给短文的错误。对标有题号的每一行作出判断:如无错误,在该行右边横线上划一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:

  该行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。

  该行缺一个词:在缺词处加一个漏字符号(^),在该行右边横线上写出该加的词。

  该行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。

  注意:原行没有错的不要改。

Every morning John goes to work by trains. He always                      1.________

buys a newspaper, it helps to make the time pass more quickly.        2.________

One Thursday morning, he turned on the sports page. He wanted             3.________

to see the report about an important football match the night            4.________

before. The repot was such interesting that he forgot to get off         5.________

at his station. He didn’t know it when he saw the sea. He got           6.________

off at the next station, and have to wait a long time for a train to     7.________

go back. Of course, he arrived very late at the office.                      8.________

His boss were very angry when John told him why he was late.        9.________

“Work is very more important than football!”                                10.________

 

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