信号

signal （信号） __11__ the driver __12__ on.” His wife explained， “Only the conductor __13__ to ring the bell twice. That's why the conductor __14__ so angry！”Henry nodded （點头）. “I __15__，” he said.1. A. got off      B. gets off    C.

美měi洲zhōu大dà赤chì鱿yóu生shēnɡ活huó在zài光ɡuānɡ线xiàn微wēi弱ruò的de深shēn海hǎi，但dàn当dānɡ它tā们men群qún體tǐ行xínɡ动dònɡ时shí，却què很hěn少shǎo会huì撞zhuànɡ到dào彼bǐ此cǐ。这zhè是shì为wèi什shén么me呢ne？近jìn期qī发fā表biǎo于yú《美měi国ɡuó国ɡuó家jiā科kē学xué院yuàn院yuàn刊kān》的de一yì篇piā