短文填空A study of birth order shows that there are big differen

短文填空
A study of birth order shows that there are big differences between the oldest,the middle ,and the youngest as well as single children.It says that the o____ children are smart and strong-willed,and they are very likely to be s_____.The reason for this is simple.parents spend a lot of time with their first children.More a___ is paid to the oldest children,so the oldest children are likely to do w_____.Single children can also become very successful like the oldest children,but they are more l_____ to have problems doing things.
It also shows that middle children often have a h____ time than their brothers and sisters.Middle children don't get so much attention,so they don't feel that
important.They often feel that people don't c______ about them.The youngest children then often get special t_____.They are the most likely to have emotional p____,but at the same time,they are the most outgoing.
Do you think that this idea about birth order is ture?Some scientists say that the results are too general and that not everyone is the same.The e____ is more powerful than the birth order.