问题 实验题

(7分)下图为植物细胞结构模式图,请按要求回答有关问题:

如果去掉【   】_________,细胞的形态会发生改变;含有的遗传物质的结构是【   】_________;吃杨梅时的酸味物质应该含在【   】_________的_________中。

答案

【5】细胞壁【3】细胞核【1】液泡  细胞液

题目分析:植物细胞的基本结构是:5细胞壁、4细胞膜、3细胞核、1液泡、2细胞质,细胞壁对细胞具有支持和保护作用,所以如果去掉细胞壁,细胞的形态发生改变,遗传物质主要存在于细胞核中,液泡中含有细胞液,细胞液中含有多种营养物质。

填空题

根据下列短文内容,在短文后的空格处填上一个恰当的词,使短文完整、通顺。

     What can you do to keep healthy? Perhaps for children, healthy eating is one of the most important things.

Here are some ideas about   1   to eat healthily. Having breakfast

     A good breakfast is very important to children. It's necessary to have it in the   2  . But some children often

go to school   3   breakfast, just because they want to sleep a little longer. Remember that a good breakfast will

help you study better. Having milk 

     "My dream is that all the Chinese children can get half a kilogram (公斤) of milk a day." The Chinese

Premier ( * * ) Wen Jiabao said this during his visit to a milk farm. Milk is also very important to children's

health. It makes children   4   stronger. It's better for you to   5   a glass of warm milk before going to bed.

That will help you have a good   6 

     Having healthy food is the most important. That means eating lots of different   7   of

food, especially fruits and vegetables. Don't eat too much chocolate   8   ice-cream. Some of you   9   eating

fast food, but in fact it is not good for your health. Try to eat healthy food as much as   10 

     Have healthy eating habits, and you will have a strong body.

1. __________   2. __________   3. __________   4. __________   5. __________

6. __________   7. __________   8. __________   9. __________   10. __________

选择题