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题目列表(包括答案和解析)

下表为探究“种子萌发的环境条件”的实验设计,请根据表中提供的信息回答下列问题:
瓶子编号
种子的数量
(个)
种子所处的环境
(其他外界条件均适宜)
A
3
少量水,20℃
B
3
无水,20℃
C
3
少量水,—10℃
D
3
水将种子淹没,20℃
(1)用A号瓶与B号瓶进行对照,所探究的的问题是____________________________
(2)探究温度对种子萌发的影响,应该用__________两号瓶做对照实验。
(3)请你预期A号、D号瓶的实验结果依次是_______________________(萌发和不萌发),据此可以得出的结论是_____________________________________。
(4)指出本实验设计中的不足是_____________________________________。
(5)如果在严格按照上表的实验条件进行实验的情况下,用于实验的种子最终都没有萌发,原因可能来自_____________________。
(6)若探究光照对该种子的萌发有无影响,请完成下列实验方案设计。
第一步:在两同样瓶加入适量的水,_________________­­­____________;
第二步:________________________ ,另一组瓶置于黑暗的环境中。

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九年级学生面临着升学的压力。因此,许多学生课间休息时依然在教室里做作业。这样的行为会给学习带来帮助吗?初三(2)的同学们就这个问题进行了热烈的讨论。现在请你以“Is it a proper way to study in the 10-minute break?”为题,根据同学们的讨论结果写一篇短文,并谈谈你的看法。讨论结果如下:
         Some students’ ideas
               Your ideas
1. save time
1. …
2. do more exercises
2. …
3.Get rapid(飞快的)progress
3. …
注意:
1.开头部分已写好,你只需接着写。开头部分不计入总词数。
2.所写内容必须包括表格中一些同学的想法和你的至少三个想法。
3.词数:80左右。
Is it a proper way to study in the 10-minute break?
Recently we have had a discussion about whether it is a proper way to study in the 10-minute break or not...                                                      
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              

查看答案和解析>>

九年级学生面临着升学的压力。因此,许多学生课间休息时依然在教室里做作业。这样的行为会给学习带来帮助吗?初三(2)的同学们就这个问题进行了热烈的讨论。现在请你以“Is it a proper way to study in the 10-minute break?”为题,根据同学们的讨论结果写一篇短文,并谈谈你的看法。讨论结果如下:

         Some students’ ideas
               Your ideas
1. save time
1. …
2. do more exercises
2. …
3.Get rapid(飞快的)progress
3. …
注意:
开头部分已写好,你只需接着写。开头部分不计入总词数。
所写内容必须包括表格中一些同学的想法和你的至少三个想法。
词数:80左右。
Is it a proper way to study in the 10-minute break?
Recently we have had a discussion about whether it is a proper way to study in the 10-minute break or not...                                                      
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              

查看答案和解析>>

九年级学生面临着升学的压力。因此,许多学生课间休息时依然在教室里做作业。这样的行为会给学习带来帮助吗?初三(2)的同学们就这个问题进行了热烈的讨论。现在请你以“Is it a proper way to study in the 10-minute break?”为题,根据同学们的讨论结果写一篇短文,并谈谈你的看法。讨论结果如下:

Some students’ ideas

Your ideas

1. save time

1....

2. do more exercises

2. …

3.Get rapid(飞快的)progress

3. …

注意:

1. 开头部分已写好,你只需接着写。开头部分不计入总词数。

2. 所写内容必须包括表格中一些同学的想法和你的至少三个想法。

3. 词数:80左右。

Is it a proper way to study in the 10-minute break?

Recently we have had a discussion about whether it is a proper way to study in the 10-minute break or not..                                                     

                                                                           

                                                                             

                                                                       

                                                                           

 

查看答案和解析>>

九年级学生面临着升学的压力。因此,许多学生课间休息时依然在教室里做作业。这样的行为会给学习带来帮助吗?初三(2)的同学们就这个问题进行了热烈的讨论。现在请你以“Is it a proper way to study in the 10-minute break?”为题,根据同学们的讨论结果写一篇短文,并谈谈你的看法。讨论结果如下:

Some students’ ideas

Your ideas

1. save time

1....

2. do more exercises

2. …

3.Get rapid(飞快的)progress

3. …

注意:

1. 开头部分已写好,你只需接着写。开头部分不计入总词数。

2. 所写内容必须包括表格中一些同学的想法和你的至少三个想法。

3. 词数:80左右。

Is it a proper way to study in the 10-minute break?

Recently we have had a discussion about whether it is a proper way to study in the 10-minute break or not..                                                     

                                                                           

                                                                             

                                                                       

                                                                           

 

查看答案和解析>>


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