视网膜母细胞瘤韵转移途径有( )A.直接侵入视神经组织内沿视神经蔓延人脑B.伴随视

题型:单项选择题

问题:

视网膜母细胞瘤韵转移途径有( )

A.直接侵入视神经组织内沿视神经蔓延人脑
B.伴随视网膜中央动脉,经视神经人蛛网膜下腔,蔓延至颅底脑膜
C.经巩膜上导管通路,蔓延到眼眶和球后软组织内
D.在球后软组织内经血道发生全身转移
E.以上途径均存在

考点:眼科主治医师眼科相关专业知识眼科学主治医师相关专业知识
题型:单项选择题
Mrs Read went to the market and bought several ______ eggs.

A. dozen of
B. dozens
C. dozen
D. dozens of
题型:单项选择题

溃疡病合并瘢痕性幽门梗阻,频繁呕吐,最易出现()。

A.代谢性酸中毒

B.代谢性碱中毒

C.低镁血症

D.低钙血症

E.高渗性脱水

题型:单项选择题
完形填空
     I used to hate being called upon in class mainly because I didn't like attention drawn to myself. And
__1__otherwise assigned(指定)a seat by the teacher, I always__2__to sit at the back of the classroom.
     All this__3__after I joined a sports team. It began when a teacher suggested I try out for the
basketball team. At first I thought it was a crazy__4__because I didn't have a good sense of balance,
nor did I have the__5__to keep pace with the others on the team and they would tease me. But for the
teacher who kept insisting on my "__6__for it",   I wouldn't have decided to give it a try.
     Getting up the courage to go to the tryouts was only the__7__of it! When I first started__1__the
practice sessions, I didn't even know the rules of the game, much__9__what I was doing. Sometimes
I'd get__10__and take a shot at the wrong direction-which made me feel really stupid.__11__,   I
wasn't the only one "new" at the game, so I decided to__12__on learning the game, do my best at each
practice session, and not be too hard on myself for the things I didn't__13__"just yet".
     I practiced and practiced. Soon I knew the__14__and the "moves". Being part of a team was fun
and motivating. Very soon the competitive__15__in me was winning over my lack of confidence. With
time, I learned how to play and made friends in the__16__— friends who respected my efforts to work
hard and be a team player. I never had so much fun!
     With my__17__selfconfidence comes more praise from teachers and classmates. I have gone from
"__18__" in the back of the classroom and not wanting to call attention to myself,  __19__raising my
hand—even when I sometimes wasn't 100 percent__20__I had the right answer. Now I have more
selfconfidence in myself.
( )1. A. as            
( )2. A. hoped        
( )3. A. continued    
( )4. A. idea          
( )5. A. right        
( )6. A. going        
( )7. A. point        
( )8. A. enjoying      
( )9. A. less          
( )10. A. committed    
( )11. A. Interestingly
( )12. A. focus        
( )13. A. want        
( )14. A. steps        
( )15. A. role        
( )16. A. process      
( )17. A. expressed    
( )18. A. dreaming    
( )19. A. by          
( )20. A. lucky        
B. until        
B. agreed      
B. changed      
B. plan        
B. chance      
B. looking      
B. half        
B. preparing    
B. later        
B. motivated    
B. Fortunately  
B. act          
B. do          
B. orders      
B. part        
B. operation    
B. improved    
B. playing      
B. for          
B. happy        
C. unless      
C. meant      
C. settled    
C. belief      
C. ability    
C. cheering    
C. rest        
C. attending  
C. worse      
C. embarrassed
C. Obviously  
C. rely        
C. support    
C. rules      
C. mind        
C. movement    
C. preserved  
C. relaxing    
C. with        
C. sure        
D. though      
D. chose        
D. started      
D. saying      
D. patience    
D. applying    
D. basis        
D. watching    
D. further      
D. confused    
D. Hopefully    
D. try          
D. know        
D. games        
D. value        
D. situation    
D. recognized  
D. hiding      
D. to          
D. satisfied    
题型:单项选择题

A new study suggests that sad music might actually arouse positive emotions. The finding helps to explain why people enjoy listening to sad music, say Ai Kawakami and her colleagues from Tokyo University of the Arts and the RIKEN Brain Science Institute, Japan. Ai Kawakami and her colleagues asked 44 volunteers, including both musicians and nonspecialists, to listen to two pieces of sad music and one piece of happy music. Each participant was required to use a set of keywords to rate both their perception(观念) of the music and their own emotional state.

The sad pieces of music included Glinka’s La Separation in F minor and Blumenfeld’s Etude Sur Mer in G minor. The happy music piece was Granados’s Allegro de Concierto in G major. To control the “happy” effect of major key, they also played the minor key(小调) pieces in major key, and vise versa.

The researchers explained that sad music aroused contradictory emotions because the participants of the study tended to feel sad to be more tragic and less romantic than they felt themselves while listening to it.

“ In general, sad music causes sadness in listeners, and sadness is regarded as an unpleasant emotion. If sad music actually arouses only unpleasant emotion, we would not listen to it,” the researchers wrote in the study.

“Music that is believed as sad actually causes romantic emotion as well as sad emotion.And people, regardless of their musical training, experience this ambivalent(矛盾的) emotion to listen to the sad music,” added the researchers.

Also, unlike sadness in daily life, sadness experienced through art actually feels pleasant, possibly because the latter does not cause an actual threat to our safety. This could help people to deal with their negative emotions in daily life, concluded the authors.

“Emotion experienced by music has no direct danger or harm unlike the emotion experienced in everyday life. Therefore, we can even enjoy unpleasant emotion such as sadness. If we suffer from unpleasant emotion aroused through daily life, sad music might be helpful to alleviate negative emotion,” they added.

小题1: People enjoy listening to sad music because _______.

A.sad music may help arouse positive emotions

B.sad music can make people relax

C.Sad music has a positive effect on people’s health

D.many experts recommend people to listen to sad music小题2:We can learn from the passage that _______.

A.sad music only causes sadness in listeners

B.Only musicians were invited to take part in the survey

C.The volunteers were asked to listen to three pieces of music in all

D.Granados’s Allegro de Concierto in G major can cause positive emotions小题3:The underlined word “alleviate” in the last paragraph means “         ”.

A.add

B.strengthen

C.cause

D.reduce小题4:What is the main idea of this passage?

A.People should listen to sad music.

B.Happy music can make people sad.

C.Sad music may actually cause positive emotions.

D.Sad music is really bad to people.

题型:单项选择题

可引起胎儿听觉损伤的噪声需达到()

A.45dB

B.55dB

C.65dB

D.75dB

E.85dB

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