⑴____There's the bus stop.
⑵____Red is stop.
⑶____Green is go.
⑷____The Happy Zoo is there.
⑸____Yellow is wait.
A. B. C.
D. E.
受精卵的形成是一个新生命的开始.(判断对错)
对下面年代尺中提供的时间,解读最准确的是( )