[单项选择]因防护方面的问题而被禁用的同位素是（）
A. 铯-137
B. 铱-192
C. 镭-226
D. 锎-252
E. 碘-125

• A. Business manager

• 
  You will be responsible for our global business within specific countries and will have a good understanding of international distribution, possibly based on previous experience, plus the ability to work in markets that are highly varied in their culture. You will be fluent in a second language and be willing to travel extensively.
• B. Department store buyer
• 
  Based at our head office in London, you will select and order stock from our suppliers in Italy. You will need to predict fashion trends and build a strong relationship with our Italian office. You will have gained your buying experience in women’s fashion and will hold a degree in design.
• C. Legal services administrator
• 
  AS head of the legal office, your work will include managing the office IT network, typing reports and supervising staff members. You wil
  

Television--the most pervasive and persuasive of modern technologies, marked by rapid change and growth--is moving into a new era, an era of extraordinary (1) and versatility, which promises to reshape our lives and our world. It is an electronic revolution of sorts, made possible by the (2) of television and computer technologies.
The word "television", derived from its Greek (tele: distant) and Latin (vision: sight) roots, can (3) be interpreted as sight from distance. Very simply (4) , it works in this (5) : through a sophisticated system of electronics, television provides the capability of (6) an image (focused on a special photo-conductive plate within a camera) into electronic impulses, which can be sent through a wire of cable. These impulses, when fed into a (7) (television set), can then be electronically (8) into that same image.
Television is (9) just an electronic system, (10)
A. fields
B. scopes
C. categories
D. ranges