A-A+
Few airlines want to impose a total ban on the
问题详情
Few airlines want to impose a total ban on their passengers using electronic devices because ______.
A．they don"t believe there is such a danger as radio interference
B．the harmful effect of electromagnetic interference is yet to be proved
C．most passengers refuse to take a plane which bans the use of radio and cassette players
D．they have other effective safety measures to fall back on
参考答案
正确答案：B
解析：A 、C 和D 在文中未提及，也无从推理出来。文章第三段指出“because they(the experts) have not been able to reproduce these effects in a laboratory，they have no way of knowing whether the interference might be dangerous or not"，因此航空公司对禁止在飞机上使用电子设备表现出犹豫不决，由此可以推断出航空公司没有彻底禁止机上乘客使用电子设备的原
