单项选择题

光纤耦合器只能实现光信号的分路。（） A. 对 B. 错

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单项选择题

The Lantern Festival has been the carnival of the Chinese people since ancient times, the reasons are as follows, except ________.
A、All the serious Spring Festival rites were over on the Lantern Festival.
B、Whether rich or poor, male or female, old or young, people would enjoy the lantern display on the Lantern Festival.
C、The emperors, the ministers, and the mass would celebrate together.
D、The unmarried girls can get married with their beloved ones.

禁毒知识竞赛题库及答案（403题）-26

答案： A.鸦片烟

B.卷烟

C.大麻烟

正确答案：A

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