【判断题】【消耗次数:1】
森林和草地生态系统是全区土壤保持功能的主体。
正确
错误
参考答案:
复制
纠错
相关题目
【判断题】 素有“绿色水库”之称的生态系统是森林生态系统。
①  正确
②  错误
【单选题】 森林生态系统对太阳能的利用率远大于农田生态系统,主要原因是森林生态系统()。
①  A.以木本植物为主
②  B.土壤肥沃
③  C.没有人类的活动
④  D.植物群落有分层结构
【单选题】 在生态系统中,通过(),实现整个生态系统的结构和功能的转化和再生,形成生态系统的无限发展进化的过程
①  A生命元素
②  B营养物质
③  C食物链
④  D环境资源
【判断题】 地球上的生态系统可分为陆地生态系统和海洋生态系统。
①  正确
②  错误
【判断题】 地球上的生态系统可分为陆地生态系统和空间生态系统。
①  正确
②  错误
【单选题】 中国陆地生态系统的主体是( )。
①  A.草地
②  B.农田
③  C.森林
④  D.沙漠
【判断题】 森林是陆地生态系统的主体,在维护生态平衡中起着决定性作用
①  正确
②  错误
【判断题】 人类主要生活在以城市和森林为主的生态系统中。
①  正确
②  错误
【判断题】 目前许多自然生态系统已被开发利用成为人工生态系统,其中对其它生态系统的依赖很大,比较脆弱的人工生态系统是果园生态系统。
①  正确
②  错误
【判断题】 森林是陆地生态系统中最大的碳库
①  正确
②  错误
随机题目
【单选题】 What are two grammar practice activities?
①  Mechanical practice and meaningful practice
②  Volume practice and communicative practice
③  Interest practice and meaningful practice
④  Mechanical practice and success oriented practice.
【单选题】 What are two broad categories of knowledge?
①  Implicit knowledge and explicit knowledge
②  Obvious knowledge and unobvious knowledge
③  Inductive knowledge and deductive knowledge
④  Refereed knowledge and inferred knowledge.
【单选题】 Which of the following steps are typical for the deductive grammar teaching method?
①  Give examples→explain rules→students do practice activities
②  Authentic language data is provided→induces learners to realize grammar rules→apply the new structure to produce sentences (the inductive method)
③  Explicit rules are give to students→Authentic language data is provided→apply the new structure to produce sentences (the guided discovery method)
④  All of the above.
【单选题】 Which of the following statement is not true?
①  Grammatical competence is essential for communication
②  There is a positive role of instruction for grammar learning
③  Grammar teaching can enhance learner proficiency
④  Grammar learning is completely useless for children.
【单选题】 Which of the following is not grammar presentation method?
①  Deductive method
②  Inductive method
③  Guided discovery method
④  Communicative teaching method.
【单选题】 What is the realistic goal of teaching pronunciation?
①  Consistency
②  Intellegibility
③  Communicative efficiency
④  All of the above.
【单选题】 Which type does the following production practice belong to? She sells sea shells on the seashore.
①  Make up sentences
②  Using meaningful context
③  Using pictures
④  Using tongue twisters.
【单选题】 Which type does the following production practice belong to? The students repeat what the teacher says. This activity can practice individual sounds, individual words, groups of words, and sentences.
①  Listen and repeat
②  Fill in the blanks
③  Make up sentences
④  Using meaningful context
【单选题】 What does the falling intonation on the question “where do you live ?” indicate?
①  I am telling you something you do not know
②  I have not finished yet
③  I am asking a genuine question
④  I know you have told me before.
【单选题】 What is reflected as important in the following example? A. Would you please turn down the radio a little bit? B. Sorry. ↘ (no, I do not want to.) Or B. Sorry? ↗ (what did you say?)
①  Stress
②  Intonation
③  Sounds
④  Pitch Part