问题 填空题 案例分析题

种子的休眠、萌发与植物激素有着密切的关系。将休眠状态的糖枫种子与湿沙混合后放在0~5℃的低温下l~2个月,就可以使种子提前萌发,这种方法叫层积处理。下图表示糖枫种子在层积处理过程中各种激素含地的变化情况,请据图回答:

从图中可以看出()(激素)对种子的萌发起促进作用,在种子破除休眠的过程中,赤霉素与脱落酸之间存在()关系。各种激素含量的变化说明了()。

答案

参考答案:细胞分裂素和赤霉素;拮抗;植物的生命活动,不受单一激素的调节而是多种激素相互协调共同发挥作用的

选择题
阅读理解

读下面的简历并回答问题。

     ①Hi! My name is Jenny. I am nearly l3 years old and I am in Grade l, NO. 3 Middle School. I have a

sister called Sooner and a cat called Campuses.Sooner is 10. I enjoying reading, swimming and playing

tennis. I also like blowing the flute (吹笛子) and playing the piano.

     ②Hi! My name is Sue and I am l4 years old. I am in Grade 2 at No. 14 Middle School and I have a

sister who is 8 years old. My hobbies are reading,running. I like running in races.

     ③Hi! My name is Ann and I am l5 years old. I am in Grade 3 at No. 110 Middle School. I am the only

girl out of four children in my family. I have three younger brothers-their names are Peter, Michael and

James.

     ④Hi! My name is Manthers and I am l6 years old. I have a brother, Bob, who is14. My hobbies are

riding a bike and playing computer games. I have two dogs named Choky and Nutty.

1. Who like playing the piano?

                                                                          

2. Who likes running in races? 

                                                                          

3. What are Choky and Nutty?

                                                                          

4. Who has sisters?

                                                                          

5. Who is the only girl of them?