在温度、光照都适宜条件下，将消毒后有生活力的小麦种子一直浸没在无菌水中，会使种子死亡．下列对种子死亡原因的分析，合理的是（　　）

    I couldn't believe my ears when I heard my name calling. I was chosen to play the leading role in the play, that was my dream. As a shy and thin girl, I was used to be quite afraid of speaking in the public. But my parents and teachers always encourage me to do so. Now I have changed great. In class, I am often the first one to stand up and answer questions even if I may take some mistakes. No pains, no gains. Now I am always brave enough overcome the difficulty in my heart and have changed in a lively girl. But my experience shows that we should not be afraid of losing faces and only in this way can we make progresses.