1、单选题：
As the gender barriers ________, the number of women working as lawyers, doctors, or bankers began to increase significantly from the mid-20th century. 
选项：
A:crumbling          
B:crush     
C:crushed
D:crumbled      
答案: 【crumbled      】

2、单选题：
With the data collected each year, the owner of the shop can _____ customer trends and how things like weather and economic indicators affect sales performance. 
选项：
A:discerning     
B:consider
C:discern    
D:concern     
答案: 【discern    】

3、单选题：
His supervisor pushes and motivates him in such a positive manner that he is not only able to reach but to _______ his personal goals.    
选项：
A:surpassing    
B:surpass  
C:surprise    
D:surpassed   
答案: 【surpass  】

4、单选题：
He is a man with a(n) ______ business sense. He has built his initial investment into a substantial and even excessively large fortune.
选项：
A:shrewd   
B:shine
C:showing      
D:show    
答案: 【shrewd   】

5、单选题：
The ______ of nuclear radiation directly into electricity was an exciting possibility that was being vigorously explored in many laboratories in the 1950s. 
选项：
A:conversion   
B:converse   
C:conversation   
D:considerate
答案: 【conversion   】

6、单选题：
I was not only shocked but also disgusted that the report tried to _______ the scientific facts in such a manner that even some highly-educated people were fooled.  
选项：
A:discuss
B:distorting   
C:distort    
D:distorted  
答案: 【distort    】

7、单选题：
Sixty-two and blessed with his mother's skin, the fisherman had withstood a lifetime of exposure to the sun and looked as ______ as a man in his forties. 
选项：
A:radiant     
B:radiate   
C:radiating   
D:radiation
答案: 【radiant     】

8、单选题：
French educator Louis Braille invented a simple but _______ code which has had an impact on the lives of generations of people who are blind.     
选项：
A:incent       
B:inside   
C:incident  
D:ingenious
答案: 【ingenious】

9、单选题：
The senators didn't expect us to ask such tough questions, and when we finally did, they got ______ and didn't know what to say.
选项：
A:stump   
B:stamp
C:stumping  
D:stumped  
答案: 【stumped  】

10、单选题：
This newly established university supports the ______ that a more diverse higher education system is desirable since it would enhance opportunities for lifelong learning. 
选项：
A:pose   
B:posing
C:position   
D:proposition   
答案: 【proposition   】