Bob is six years old．He is old enough to go to school． On the first day，his teacher taught him three words，“I，you，he”．Then the teacher said，“I am your teacher．You are my student．He is your student. He is your classmate.”When school was over，Bob went home. His mother asked him，“What has your teacher taught you today?”Bob said with a smile，“Listen，Mum and Dad，I am your teacher．You are my student．He is your classmate．”His mother said，“No，dear．You’re wrong．”Then she said，“I am your mother．You’re my son．He’s your father．”The next day，Bob’s teacher asked Bob to make sentences with “I，you and he”．
Bob stood up and said，“I’m your mother．You’re my son．He is your father．”All the students in Bob’s class laughed．

2014年12月7日“长征四号乙”运载火箭在太原卫星发射中心执行中巴地球资源卫星04星的发射任务，如图所示是火箭发射时的情景，关于卫星加速上升的过程中，下列说法正确的是（　　）

____

鸟类在发育过程中发生变态。