菊花一般在秋天开花。影响菊花开花的生态因素是什么？科学兴趣小组对“菊花是否开花与日照长短的关系”进行了探究。
（1）作出假设____________________________________。
（2）进行实验：取十盆大小、长势相似且未开花的菊花，放在其他环境条件都适宜且相同的地方，其中五盆放在日照时间短的地方，另五盆放在日照时间长的地方，经过一段时间后，观察开花情况。该实验的主要变量是______________________。
（3）如果他们的假设成立，观察到的现象应是：__________________________________________________________。
（1）菊花的开花可能受短日照的影响（或菊花的开花可能受长日照的影响）
（2）日照时间长短（或日照长短）
（3）放在日照时间短的地方菊花开花，放在日照时间长的地方菊花没有开花或放在日照时间长的地方菊花开花，放在日照时间短的地方菊花没有开花。
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| A gift left to her Early in the morning, I was taken in a nylon bag into a truck. I felt horrible as well as 1 . What would she do with me? She was almost mad after the 2 of her husband. A few minutes later, I heard the truck 3 its engine and move fast. I kept making sounds to show my protest, but failed to make any 4 . Finally she put me down in a 5 place. Maybe she didn't want me to die from lack of air；she untied the bag. I 6 out and looked up, only to see many strange faces and fingers pointing at me. It turned out that my owner meant to 7 me. I saw my owner on the truck, which was going farther and farther. So I cast my head 8 the direction of the truck. The days we spent together were like a movie playing in front of my eyes as I ran after the truck. I saw my male owner, who suffered liver cancer, looked at me with his sad eyes. I saw myself 9 my owner everywhere；I saw him lie in his dying bed, she was all 10 . I ran as fast as I could. And the 11 I saw her wave to me, my eyes became wet. I wouldn't blame her for treating me like this for she was such a(an) 12 lady. She seemed even somewhat 13 at his leaving her alone, trying many ways to 14 the pains of losing him. She 15 his pictures and clothes, she redecorated the whole house. Now I was the only 16 thing to remind her of him. 17 later, I am pretty sure that she would realize how mad she was to do this… The truck finally stopped when I was almost 18 . She ran up to me and hugged me 19 . I heard her 20 : "I know you are a present he left to me." | ||||
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