题目

水是人类最宝贵的自然资源，依据所学化学知识回答： （1） 小明利用如图所示的装置探究水的组成，通电一段时间后，试管a收集到的气体是，a、b两试管气体的体积比是。 （2） 将“嫦娥一号” 送上太空的火箭推力巨大，因为它所使用的燃料是液氢、助燃剂是液氧，则液氢燃烧的化学方程式为。 （3） 为了探究“水的净化”过程，某实验小组从小河中取了水样，观察到水样浑浊，呈黄色，有异味，有固体小颗粒。现对水样进行如Making Our Team Work Best Learning in school, we often work in small groups．But why? Is it necessary to work with others? What if you feel comfortable doing a job by yourself ? In reality, however, after leaving school, you will find out that almost all work in many fields is done in teams． 56．____ Actually, a team is a group of individual people brought together in order to complete a task which cannot be efficiently finished by any member of the group alone．The group may be temporary or it may stay together for a long period． 57．____ A type of team that we are familiar with are sports teams, which are made up of a certain numbers of players．They work together to win a match．In fact, different numbers have different skills in a team．A team can only work well when all their members cooperate．The atmosphere in a team affects the performance of the team, so the social relations within the team are important． 58．____ Teams require leaders, and people who create ideas, who develop ideas, and people whose role is to comment and help improve plans．People who identify problems and suggest solutions are needed in a team, too．Every team member works in their most efficient way to make the whole team work best． 59．____ Regulations and rules help teams work well．But be careful．Working in a team, we have to take into account how each individual member can work best．Some may work best on task alone; others work best in groups．How the group task is divided depends on the personalities and abilities of the individual in the group． 60．___ In a dynamic （充满活力的） team, people with quite different personalities work well together．Actually, their differences are the strength of the team．To make the best of working with our classmates, or to make our team work best, it is important to recognize the strengths and weaknesses of each individual of the group． To know someone's personality type and ability is to know a great deal about that individual person, or to understand that person．To understand means that we can build strong relationship between members of a team, and make the best use of each others' talents．          A．Knowing about Team Members          B．Functions of Rules and Regulations          C．Team Members and Their Roles          D．How a Team Works          E．A Sports Team          F．The Definition （定义） of a Team