A-A+
From the last paragraph we can see that the us
问题详情
From the last paragraph we can see that the uses of the laser_________ .
[A] are yet to be simplified
[B] are expanding all the time
[C] remain an ideal in imagination
[D] remain an issue beyond solution请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
49．B【精析】细节题。从原文第五段第三句话“Aswehaveseen,theusesofthelaserarenumerous．”可知，目前激光的应用越来越广泛，所以正确的答案为B。
