问题 选择题

等质量的铁与过量的盐酸在不同的实验条件下进行反应,测得不同时间(t)内产生气体体积(V)的数据如图,根据图示分析实验条件,下列说法中一定不正确的是(  )

组合对应曲线c(HCl)/mol·L-1反应温度/℃铁的状态
1a 30粉末状
2b 30粉末状
3c2.5 块状
4d2.530块状
 

A.第1组实验中盐酸的浓度大于2.5 mol·L-1

B.第2组实验中盐酸的浓度等于2.5 mol·L-1

C.第3组实验的反应温度低于30 ℃

D.第4组实验的反应速率最慢

答案

答案:C

由图象可知,反应速率:a>b>c>d,D正确。第1、2两组中反应温度相同,铁的状态相同,前者速率大于后者,说明前者盐酸浓度大。第2、4两组中由于铁的状态不同,所以无法判断盐酸的浓度大小,若前者盐酸的浓度是2.5 mol·L-1,则速率也是前者快,A、B可能正确。第3、4两组中盐酸浓度相同,铁的状态相同,而v(c)>v(d),说明第3组中反应温度比第4组高,C错误。

完形填空
完形填空。
     The day before Clara's birthday, she was very 1 . She hoped she would get lots  of   presents.  She went to her
bedroom, and began to 2 a letter to her mother. 3 the letter, she said she would like to go on a picnic and open her
presents during the picnic. Clara gave her mom the letter and her mom said, "Thanks, dear. Go to bed 4 I'll read it."
Clara went to bed with her favorite teddy bear. Her mom 5 her face and said, "Good night."
     Early next morning, Clara put on her 6 and went to the living room.  Her mom was 7 things for the picnic. After
breakfast, the family 8 their car to the park. They found a good place.   Clara unwrapped her presents. There were
beautiful skirts, dolls and books. Finally, Mom took out the last present. It was a 9 box. Clara opened the box and
found a pot. A lovely fish was swimming in it. Clara was so happy. Now, she still remembers that birthday 10 .
( )1. A. surprised  
( )2. A. send      
( )3. A. On        
( )4. A. but        
( )5. A. saw        
( )6. A. bags      
( )7. A. making    
( )8. A. drove      
( )9. A. broken    
( )10.A. right now  
B. pleased  
B. draw      
B. In        
B. so        
B. washed    
B. clothes  
B. planting  
B. mended    
B. ugly      
B. at first  
C. relaxed      
C. write        
C. From        
C. and          
C. forgot      
C. glasses      
C. borrowing    
C. stopped      
C. bright      
C. all the time
D. worried      
D. find        
D. Before      
D. or          
D. kissed      
D. gloves      
D. preparing    
D. cleaned      
D. pretty      
D. just now    
阅读理解

In 1933 an unknown American called Clarence Nash went to see the film-maker Walt Disney. He had unusual voice and he wanted to do work in Disney’s cartoon films for children. When Walt Disney heard Nash’s voice, he said, “Stop! That’s our duck!”

The duck was the now-famous Donald Duck, who first appeared in1934 in the film The Wise Little Hen. Donald lived in an old houseboat and wore his sailor jacket and hat. Later that year he became a star after an eight-minute Mickey Mouse film. The cinema audiences liked him because he was lazy and greedy, and because he lost his temper very quickly. And they loved his voice, when he became angry with Mickey’s eight nephews. Soon Donald was more popular than Mickey Mouse himself, probably because he wasn’t goody-goody like Mickey.

In the 1930s, 40s and 50s, Donald and his friends Mickey, Goofy and Pluto make hundreds of Disney cartoons. He also made educational films about the place of the USA in the world, and safety in the home. Then in 1966 Donald Duck and his voice disappeared—there were no more new cartoons.

Clarence Nash died in February, 1985. But today’s children can still see the old cartoons on television and hear that famous voice.

小题1:Walt Disney ______.

A.played the part of Donald Duck

B.made Donald Duck films

C.had Donald Duck’s voice

D.drew cartoons小题2:Walt Disney chose Clarence Nash ______.

A.because his voice was right for Mickey Mouse

B.because his voice was right for the duck in a new cartoon film

C.because he was fond of playing jokes

D.because he was quite humorous小题3: The first Donald Duck film ______ .

A.appeared in 1934

B.was shown in 1933

C.was greatly appreciated in 1966

D.was popular in 1930小题4:Which of the following in NOT true?

A.Clarence Nash had Donald Duck’s voice.

B.People liked Donald Duck better because he was lazy and greedy and became angry quickly.

C.Donald Duck’s voice disappeared in 1966.

D.Mickey Mouse wasn’t a goody-goody.