单项选择题

Passage 2
The medical views were as funny as they always are about anything. Whenever any new (71) is put forward, (72) for it and those against it can always find (73) men to approve or condemn. The anti-railway group produced doctors who said that (74) would be most dangerous to public health: they would produce colds, catarrhs and consumption. The deafening noise, the gloom, the glare of the engine fire, would have a (75) effect on the nerves. Further, being moved (76) the air at a high speed would do grave injury to delicate lungs. In those with high blood pressure, the movement of the (77) might produce apoplexy. The sudden plunging of a train into the (78) of a tunnel and the equally (79) rush into full daylight, would cause great damage to eyesight. But the pro-railway group was of course able to produce equally well-known doctors to say the (80) . They said that the speed and swing of the train would equalize the circulation, promote digestion, calm the nerves and ensure good sleep.

78（）

点击查看答案&解析