[单项选择]患者体内有金属异物时禁用高频电疗的原因何在
A. 电流集中于金属物转变为热能而烧伤组织
B. 电流集中于金属物转变为磁能，磁又生电
C. 金属物在电场中产生感应电场
D. 金属物在电场中发生感应电流
E. 金属物易于氧化、腐蚀、破坏

Task 1
Directions: After reading the following passage, you will find 5 questions or unfinished statements, numbered 36 to 40. For each question or statement there are 4 choices marked A), B), C) and D). You should make the correct choice and mark the corresponding letter on the Answer Sheet with a single line through the center.
Traditionally, universities have carried out two main activities: research and teaching. Many experts would argue that both these activities play a critical role in serving the community. The fundamental question, however, is: how does the community want or need to be served
In recent years universities have been coming under increasing pressure from both the governments, and the public to ensure that they do not remain "ivory towers"(象牙塔) of study separated from the realities of everyday life. University teachers have been encouraged, and in some cases constrained(强逼), to provide more courses which produc
A. education should serve the social needs
B. it is advisable for today's philosophers to know computer science
C. such abstract subjects as philosophy is no longer useful
D. universities in the UK have produced too many good for nothing graduates