怎样防治和控制马铃薯的疯长(徒长)?

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问题:

怎样防治和控制马铃薯的疯长(徒长)?

考点:农业技术指导员农作物品种(马铃薯)农作物品种(马铃薯)题库
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阅读理解。
                                               Scientist Without Laboratories
      When you hear the word "scitentist", what do you think of? Many people think scientist are people in
clean white coats who work in labs. And some scientists do work in labs. But there are  1  scientist who
work in woods and jungles. These scientists are called "animal behavior (行为) scientists", and they study
animals as they live in nature.
     Why don't these scientists catch animals and study them in zoos? The  2  is in the word"behavior".
Animals behavior scientists want to learn  3  animal behave in their wild homes. When animals live in cages
(笼子) or in zoos, they do not act the same as they do when they are  4  . They may fight  5  each other, or
they may not eat, or they may not raise (抚养) their babies as they usually would. To see real animal behavior,
scitentists must go where the animals  6 .
     So animal behavior scientists go into the jungles, the woods or the desert. There, their most important  7  
are their eyes and ears. They watch and listen to the animals very  8 . They write down everything that
happened in notebook.  9  they live near the animals, the scientists are careful not to frighten them. If the
scientists are luncky, the animals will  10  no attention to them. Then the scientists can see how the animals
really live.
     The behavior scientists hope what they've learned about animal behavoir can provide clues (提供线索) to
help people learn to live together more happily.
( )1. A. another
( )2. A. answer 
( )3. A. when   
( )4. A. happy  
( )5. A. of     
( )6. A. live   
( )7. A. machines
( )8. A. truly  
( )9. A. But    
( )10. A. pay   
B. other   
B. question
B. where   
B. free    
B. among    
B. run     
B. tools   
B. carefully
B. Unless  
B. spend   
C. others   
C. problem  
C. how      
C. sad      
C. for      
C. play     
C. thoughts 
C. woderfully
C. Though   
C. take     
D. the other
D. text     
D. why      
D. angry    
D. with     
D. eat      
D. ways     
D. nicely   
D. As if                       
D. cost     
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将上面的英语单词与下面相应的课程搭配起来。

1. P.E.          2. Music           3. Art             4. Math          5. English

  ( )              ( )              ( )               ( )              ( )

A. 音乐         B. 英语           C. 体育           D. 数学            E. 艺术

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影响转化催化剂使用寿命的因素有哪些?

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车用消防泵当额定流量大于80L/S时,则引水时间小于50S。

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下图为铰链四杆机构,设杆A最短,杆B最长以d为机架。试用符号和式子表明它构成曲柄摇杆机构的条件:()。

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