问题 选择题

美国首颗“嗅碳”卫星在2009年2月24日发射升空过程中因运载火箭出现故障坠毁,这颗卫星的主要任务是绘制全球二氧化碳循环地理分布图.下面关于二氧化碳的叙述不正确的是(  )

A.二氧化碳的水溶液能使紫色石蕊试液变红

B.二氧化碳是植物进行光合作用必不可少的原料

C.固态二氧化碳俗称干冰,升华时可吸收大量热,因而可用作制冷剂

D.自然界中的二氧化碳主要消耗途径是植物的呼吸作用

答案

A、二氧化碳能与水反应,生成碳酸,时水溶液显酸性,所以二氧化碳的水溶液能使紫色石蕊试液变红.故正确;

B、植物进行光合作用是将二氧化碳转化为氧气并储存能量.故正确;

C、二氧化碳的固体是干冰,干冰升华吸收热量,做制冷剂.故正确;

D、自然界中的二氧化碳主要消耗途径是植物的光合作用而不是呼吸作用.故错误.

故选D

单项选择题 A3/A4型题
完形填空
Cloze.
     The 28-year-old had spent six years working nights while she gained her university degree during the day.
When she finally graduated, she had her eye on a teaching   1   at a nearby primary school. With the help of her
friends, she had an interview with the Head.
     "I noticed a tiny hole in one of my stockings earlier," she   2  . "I thought about changing them, but I knew
I'd be late if I did. And by the time I got to the interview,   3   enormous. I walked in apologizing for not   4  ."
The would be teacher didn't get the job. In fact one of her friends told her that the   5   only comment was:"If
someone doesn't take the time to present her best   6   at an interview, what kind of   7   is she going to be?"
     First impressions are   8   ones. In other words, if you're viewed positively within the critical (关键的) first
four minutes, the person you've met will   9   assume everything you do is positive. Leave the interviewer a bad
impression, and often he will assume you have a lot of other unsatisfactory characters. Worse, he or she may
not take the time to give you a second  10 . Most employers believe that those who look as if they care about
themselves will care more about their jobs.

( )1.A. profession   
( )2.A. repeats       
( )3.A. I was        
( )4.A. looking at all    
( )5.A. Head’s      
( )6.A. figure       
( )7.A. person       
( )8.A. lasting      
( )9.A. rarely       
( )10.A. job         

B. position      
B. reminds        
B. he was       
B. looking at him     
B. student’s  
B. image          
B. worker        
B. remaining      
B. occasionally  
B. thought      
C. career    
C. recalls        
C. it was     
C. looking round   
C. friend’s 
C. aspect         
C. graduate    
C. continuing    
C. probably  
C. chance      
D. occupation              
D. responds                     
D. they were                  
D. looking my best               
D. would-be teacher’s            
D. shape                        
D. teacher                  
D. persisting                   
D. certainly                
D. question