是基于以下题干：某次讨论会共有18名参与者。已知： （1）至少有5名青年教师是女性
题型：单项选择题 案例分析题
问题：
是基于以下题干：某次讨论会共有18名参与者。已知： （1）至少有5名青年教师是女性； （2）至少有6名教师年过中年； （3）至少有2名女青年是教师。
根据上述信息，关于参与人员可以得出以下哪项？（）
A.有些女青年不是教师
B.有些青年教师不是女性
C.青年教师至少11名
D.女教师至少13名
E.女青年至多11名。
题型：单项选择题 案例分析题
Many teenagers(青少年) feel that the most important people in their lives are their friends．They believe that their family members don’t know them as well as their friends do．In large families, it is quite often for brothers and sisters to fight with each other and then they can only go to their friends for some ideas．
It is very important for teenagers to have one good friend or a group of friends．Even when they are not with their friends, they usually spend a lot of time talking among themselves on the phone．This communication is very important in children’s growing up, because friends can discuss something．These things are difficult to tell their family members．
However, parents often try to choose their children’s friends for them．Some parents may even stop their children from meeting their good friends．Have you ever thought of the following questions?
Who chooses your friends?
Do you choose your friends or your friends choose you?
Have you got a good friend your parents don’t like?
Your answers are welcome．
小题1: Many teenagers think that ____ can understand them better．
A．friends
B．brothers
C．sisters
D．parents小题2:When teenagers have something difficult to tell their parent
s, they usually____．
A．stay alone at home
B．fight with their parents
C．discuss it with their friends
D．go to their brothers and sisters for help小题3:The sentence (句子) “Your answers are welcome．” means _______．
A．You are welcome to discuss the questions with us
B．We’ve got no idea, so your answers are welcome
C．Your answers are always right
D．You can give us all the right answers小题4:Which of the following is the writer’s attitude(态度)?
A．Parents should choose friends for their children．
B．Children should choose everything they like．
C．Parents should understand their children better．
D．Teenagers should only go to their friends for help．小题5:Part of the purpose of this
passage is to ___.
A．give information for the parents to make their own judgment (判断)
B．give advice to children who want to choose their friends
C．help parents to find better friends for their children
D．get some information from many readers