下图漫画给我们的启示是[ ]

A、自己与他人之间总是相互包容的

B、自己与他人之间总是相互排斥的

C、要努力保持积极健康的心态

D、人的思想无法超越现实环境

A bridge over a navigable waterway is being repaired. There is a traveller platform under the bridge’s deck that significantly reduces the vertical clearance. If required by the CG district commander，how will this be indicated at night?（）

A.Illumination by flood lights

B.A quick flashing red light at each lower corner

C.A strobe light visible both up and downstream

D.Fixed amber lights under the extreme outer edges of the traveller