在一般情况下g为定值,但经过科学家的精确测量,g值仍有差异。下表为各个不同城市的

题型:问答题

问题:

在一般情况下g为定值,但经过科学家的精确测量,g值仍有差异。下表为各个不同城市的g值大小,观察分析表中提供的数据,回答下列问题:

g值相同的城市是____________________________;

g值相差最大的两地是________________________;

试猜想g值变化的原因可能是__________________。

考点:重力的概念
题型:问答题

阅读理解。

     My family live in this street. In the morning, my father goes to work and all the children go to school.

My father takes us to school every day. My mother is at home and does the housework. She always has

lunch at noon and sees her friends in the afternoon. In the evening, all the children come home from school. we always get home early. My father comes home from work very late. In the evening my two brothers

and I always do our homework. We go to bed at ten. My father and mother usually read newspapers. On Saturday, we watch TV or play computer games.

1. _______ goes to work in the morning.

A. We all  

B. My father  

C. My mother  

D. My parents

2_______ lunch at home.

A. My mother has    

B. My father has  

C. All the family have  

D. We have

3. _______ home early.

A. My mother comes        

B. My father comes

C. All the family come      

D. We come

4. We can watch TV or play computer games _______ .

A. on Saturday    

B. every day    

C. in the evening    

D. on Sunday

5. There are _______ people in my family.

A. three      

B. four        

C. five            

D. seven

题型:问答题

在“大鱼吃小鱼,小鱼吃虾,虾吃水草”这一食物链中,虾属于(  )

A.生产者

B.初级消费者

C.次级消费者

D.分解者和消费者

题型:问答题

(6分)中国近代化是指19世纪中期以来,在各种因素影响下,中国的经济、政治、思想等方面开始摆脱封建桎梏,向大机器生产下的社会形态迈进的历程。它包括经济上的工业化,政治上的民主化、法制化,思想上的科学化等。

观察下列图片,回答相关问题:

  

图一                     图二               图三                   图四

(1)请分别回答出与图一、图二相对应的中国近代化中的历史大事件。(2分)

(2)请从图三、图四所代表的事件中任选一事件,简述其在中国近代化进程中的作用。(2分)

(3)请依据材料概括中国近代化历程是如何一步步深入的?(2分)

题型:问答题

患儿,3岁,不慎被热油烫伤,三度烧伤面积达60%,应采用()

A.接触隔离 

B.严密隔离 

C.昆虫隔离 

D.血液隔离 

E.保护性隔离

题型:问答题

认为行为是其结果的函数的学习理论是()

A.经典条件反射理论

B.操作条件反射理论

C.观察学习理论

D.个体学习理论

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