A-A+
The use of blue lights to reduce suicides __.
问题详情
The use of blue lights to reduce suicides __. A．has no result yet B．is proved effective C．is welcomed by suicides D．has been refused by stations
参考答案
正确答案：A
全文中多处提到，无论从科学的角度还是试验的角度，都还没有结果表明蓝色的灯是否会真的起作用。
