单选题The writer thinks the most important use of the laser is in the field of ______.Amedical treatmentBnational defenseCspace travelDmetrology
单选题
The writer thinks the most important use of the laser is in the field of ______.
A
medical treatment
B
national defense
C
space travel
D
metrology
参考解析
解析：
细节题。关键句：原文第四段第一句话“Probably the most vital application of the laser is in the field of medicine．”可知，激光最重要的应用是在医药领域，故正确的答案为A。
细节题。关键句：原文第四段第一句话“Probably the most vital application of the laser is in the field of medicine．”可知，激光最重要的应用是在医药领域，故正确的答案为A。
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