问题 多选题

下列关于图中所示光学现象的描述或解释正确的是(  )

A.图甲中,小孔成的是倒立的虚像

B.图乙中,人配载的凹透镜可以矫正近视眼

C.图丙中,白光通过三棱镜会分解成红、橙、黄、绿、蓝、腚、紫七色光

D.图丁中,漫反射的光线杂乱无章不遵循光的反射定律

答案

A、小孔成的像是由实际光线形成的,可以用光屏接收到,符合实像的特征,不是虚像,此项错误;

B、近视是因为晶状体曲度过大,折光能力太强使像成在视网膜前面,用凹透镜矫正,此项正确;

C、白光由七色光组成,不同色光通过三棱镜后,偏折角度不同,所以被分解成七色光,这是光的色散现象,此项正确;

D、只要是光的反射,都遵循光的反射定律,镜面反射和漫反射都遵循光的反射定律,此项错误.

故选BC.

完形填空
完形填空。
A: Hello, Linda.
B: Hello, Jack. How __1__ you?
A: Fine, thank you. And you?
B: I'm fine, __2__ .
A:  Look !  What is this in English?
B: It's __3__ English book.
A: Oh, do you __4__ English?
B: Yes, I do.
A: __5__ do you like it?
B: Because it is very__6__. 
A: Oh, __7__ is your English teacher?
B: Miss Jones.
A: Is she strict?
B: Yes, __8__ I like her very much. She is__9__ with us.
A: Do you like art?
B: No, I don't. I like music. I think it's very relaxing.
A: Oh, it's __10__ for class. Let's go.
( ) 1. A. is      
( ) 2. A. too      
( ) 3. A. a        
( ) 4. A. likes    
( ) 5. A. Why      
( ) 6. A. boring  
( ) 7. A. What    
( ) 8. A. but      
( ) 9. A. well    
( ) 10. A. time    
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  B. nice      
  B. times                   
C. am          
C. three      
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C. like        
C. What        
C. interesting
C. How        
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D. be          
D. second      
D. an          
D. has        
D. Who        
D. scary      
D. When        
D. with        
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D. what                        
判断题