问题 读图填空题

植物的生活需要水和无机盐,它们主要是由植物的营养器官   吸收的,植物生活需要量最多的无机盐是含      、含     、含     的无机盐。(4分)

答案

根 氮磷 钾

题目分析:植物主要通过根尖的成熟区吸收土壤中的水分和无机盐,并通过根、茎、叶的导管运输到植物体的各个部分,无机盐对植物的生长发育起着重要的作用,这些无机盐包括氮、磷、钾、钙、镁、硫、硼、锰、锌、钼等的多种无机盐,其中植物生活中最多的无机盐是氮、磷、钾,含氮的无机盐能促进细胞的分裂和生长,使枝繁叶茂,含磷的无机盐可以促进幼苗的发育和花的开放,使果实、种子提早成熟,含钾的无机盐使植物茎秆健壮,促进淀粉的形成与运输。

点评:此题为基础题,解答此题的关键是明确植物生长需要含氮、磷、钾无机盐,了解含氮磷钾的无机盐对植物生活的意义,可结合着具体的实例掌握。

阅读理解

阅读理解。

     Most people have ambitions(雄心).An ambition is something we want to do,want to be or want to

have.A student's ambition. for example,might be to pass his or her exams and then get 8 good job. An

athlete's ambition could be to win an important competition. A businessman's ambition is usually to make

a lot of money(赚很多钱)

     Not all ambitions are about success at work.HoweVer,some people just want to be g00d people,

have a famiIy or help others.

     Ben's ambition is to be a sports writer.He wIites the sports repons for his class newspaper. He likes

most spons,and swimIIling and football are his faVorites.Trudy's ambition is to be a concen pianist.She is

very seirous about it and practises eVery day with her best friend"ly.It is very imnportant to her.

     Harry's ambition changes every day!One day heⅧlts to be an astronaut.The next day he wants to

be a pop smger.The next day he wans to drive a racing car(赛车).His mother would be happy if his

ambition was to get up in time for school every day!

1. What do most businessmen want?

A. To make a lot of money.    

B. To trave everywhere.

C. T.o get a lot of things.      

D. Tb buy a lot of things.

2.What does Ben want to be?

A. A businessman.    

B. A sports writer.

C. A pilot.          

D. A computer programmer.

3. Why does Tmdy practice  the piano every day? 

A. Because she wants to be a concert pianist.

B. Because she wants to be an astronaut(宇航员).

C. Because she wants to be a pop singer.

D. Because she wants to be a spons writer.

4. Who's Trudy's best friend?

A. Ben.    

B. Hany.    

C. Lily.    

D. Lucy.

5. What does Harrr's mother want him to do?        

A. To work hard.    

B. To do his homework.

C. To exercise more eVery day.    

D. To get up in time for school every day.

判断题