Trees are one of the oldest plants on the earth. Just like us, trees change a lot 1 they grow. At one to three years old, young trees learn to 2 themselves. For example, many tree grow thorns (刺)to tell animals 3 near. Most young trees have large and deep green leaves to 4 enough sunlight and turn it into their food and energy. When trees are four years old, they are strong enough to 5 the challenge(挑战)in life. At the age of fifteen, they become young adults and grow more 6 . They will have their own flowers and fruit. After the trees are twenty to twenty-five years old, they are called real adults because they reach their 7 . Adults trees give us oxygen and natural beauty. If we 8 them very well, they will live healthily for many years. As time goes on, trees begin older and older and even 9 . At this time, they still have their important places in nature and uses for people. 10 many ways, the life of trees is like our own life experience.
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共回答了46个问题采纳率:100%
共价单质 共价化合物和共价化合物的关系是什么?还有如何判断是共价分子?化学式上有什么特征吗.
2024-03-263个回答
SO2和SO3是什么化合物?各自是离子化合物还是共价化合物?哪位知道怎样判断离子还是共价化合物?可以根据每种元素原子最外
2024-03-264个回答
共价化合物中一定存在共价键?共价分子有化学键吗 共价单质呢?
2024-03-261个回答
2024-03-261个回答
英语翻译The seller is responsible that,except as specifically st
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英语句子求解Tony always likes birthday parties(就划线部分提问)划线部分birthda
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英语翻译I am an undergraduate student interested specifically in
2024-03-261个回答
英语翻译I feel safe and peaceful when I am with you,specifically
2024-03-264个回答
英语翻译接上文:I am specifically looking for items witch show all t
2024-03-262个回答
英语翻译What I mean more specifically is,are you allowed to take
2024-03-261个回答
英语翻译Specifically,duringtime slot 15,A and B pulses are inhib
2024-03-261个回答
英语翻译Test Method for Metallic Bone Plates F382,specifically A
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英语翻译人工翻译Specifically,you may have heard that the defendant's
2024-03-261个回答
英语翻译Specifically,those who scored greater than 1 standarddev
2024-03-261个回答
(2013•闵行区二模)已知氧化还原反应:2Cu(IO3)2+24KI+12H2SO4→2CuI↓+13I2+12K2S
2024-03-261个回答
(2013•余姚市模拟)已知⊙O1,⊙O2的半径是2,4,圆心距为2,则这两圆的位置关系为( )
2024-03-261个回答
(2013•闵行区二模)已知关于x的一元二次方程x2-4x+m=0有两个实数根,那么m的取值范围是______.
2024-03-261个回答
(2013•攀枝花模拟)已知⊙O1、⊙O2的半径不相等,⊙O1的半径长为3,若⊙O2上的点A满足AO1=3,则⊙O1与⊙
2024-03-261个回答
(2013•闵行区二模)已知f(x)=x|x-a|+b,x∈R.
2024-03-261个回答
作文 仔细观察你周围的人物,写一篇人物类的文章.要求(人物外貌详细)400字就行了
2024-03-261个回答
你能帮帮他们吗
2024-03-261个回答
我期待能见到那位著名的作家.能不能翻译成I am looking forward to meeting the famo
2024-03-265个回答
关于英语的一些问题如果你的答案不确定的话,请注明.1.get sb to do sth 的意思是什么?2.be famo
2024-03-266个回答
Last summer we visited the West Lake, ______Hangzhou is famo
2024-03-261个回答
His uncle has written some short stories,but he is ____ famo
2024-03-265个回答
精彩回答
已知x的20次方乘y的15次方乘z的5次方=32,求x的8次方乘y的6的次方乘z的2次方的值
2024-03-262个回答
已知a的二次方加上3a等于7,b的二次方加上3b等于7,且a≠b,求a+b+=?
2024-03-266个回答
鱼我所欲也练习原文:鱼,我所欲也,熊掌,亦我所欲也;二者不可得兼,舍鱼而取熊掌者也.生,亦我所欲也,义,亦我所欲也;二者
2024-03-262个回答
如图,已知点c在线段AB上,且AC=6cm,BC=4cm,点P、Q分别是AC、BC的中点,求线段PQ的长度
2024-03-262个回答
点C在线段AB上,且AC=6,BC=4,点M是AC的中点,点N是MB的中点,求MN的长
2024-03-265个回答