C．it helps a leader to develop lots of skills

　　D．it depends on interpersonal relationship of a team

　　解析：选A　推理判断题。根据第二段中的"The team's leader should possess the skills to create and preserve a positive working environment ..."可知，创造积极的工作环境是重要原因的一部分。

　　9．The underlined word "articulate" probably means "________"．

　　A．hide B．express

　　C．feel D．plan

　　解析：选B　词义猜测题。根据文章第三段中的"Team members must be able to articulate their feelings，express plans and goals, share ideas and see each other's opinions."可知，express，share和articulate是并列关系，它们的意思应该相近。所以选B项。

　　10．When conflicts arise among team members, the team leader should________.

　　A．worry about the team members

　　B．ignore the team members' voices

　　C．work out their differences

　　D．try to avoid conflict issues

　　解析：选C　细节理解题。根据文章第四段中的"It is often advised that the team leader sit with the conflicting parties and help work out their differences without taking sides and trying to remain objective if possible."可知，领导者应该找出冲突双方意见的不同。故选C项。

　　11．To become a good team leader, you have to ________.

　　A．set up a good team

　　B．be positive and committed

　　C．look for support from the team

　　D．avoid natural disasters

　　解析：选B　推理判断题。根据文章第五段中的"In order to keep team members positive and committed and motivated, the team leader himself needs to show these qualities."可知，要成为一个好的领导，要有积极和尽心尽力的精神。故选B项。

　　D

(2018·江西五市八校联考)Patients in the early stages of Alzheimer's disease often