A.縮短期B.反轉(zhuǎn)期C.點青期D.轉(zhuǎn)青期
A.已1B.已2C.已3D.已4
A.乙1發(fā)育至乙2B.丙1發(fā)育到丙2C.戊1發(fā)育到戊3D.已1發(fā)育到己2