题目

用相同的培养液培养水稻和番茄幼苗，一段时间后，测定培养液中各种离子的浓度，结果如图所示。下列叙述中错误的是（ ） A . 不同植物吸收离子具有选择性 B . 水稻对SiO44-需求量大，番茄对SiO44-需求量小 C . 植物吸水和吸收矿质元素是两个相对独立的过程 D . 水稻培养液中的Ca2+浓度高于初始浓度的原因是根细胞主动运输排出Ca2+到培养液中(2015鄂州) “The Chinese Dreams” is a hot topic these years. (1)Many Chinese people are inspired by the Chinese Dreams. They give us courage and confidence to keep us going through difficulties.People could realize the importance of dreams and know that dreams give meaning to life. Every great achievement has been the result of years of dreaming. Teenagers and young people should be encouraged to dream. (2)Older people should also believe that it is never too late to dream and that human mind is never too old to make dreams turn into reality. Here are some advice on how to realize our beautiful dreams.Never giving up is the key to make our dreams come true. We may fail from time to time, but we can learn from failure, correct our mistakes and try again until we achieve our goals. Our life is like a long journey which is not all roses. (3)It sometimes has wind and rain. We believe rainbows will appear after storms.Cooperation is also necessary. Everyone likes a person who is good at cooperating with others. Besides, in our society most problems can’t be solved by one person alone. (4)合作正成为人们解决问题的最重要的方法之一，especially for people living in the developing society.At the same time, we should learn to examine our abilities because it helps us know our advantages and disadvantages as well as get a full control of ourselves. Then we may be confident enough to face challenges.Follow the suggestions above, and our dreams are sure to come true.1.任务一: 将1处英文翻译成汉语。_____________________________________________2.任务二：将2处英文翻译成汉语。_____________________________________________3.任务三：写出3处It 所指代的内容。_____________________________________________4.任务四：将4处汉语翻译成英文。_____________________________________________5.任务五：（5）给该文段拟写一个标题。____________________________________________