推荐回答(3个)
去年暑假,我做了一个有趣的实验――泡豆芽。我想看看豆芽是怎么生长的。
首选,我精选了二十颗子粒饱满的上等黄豆,把它们放在碗里,然后倒入水,使水将它们淹没,放在背光的地方,让可爱的豆宝宝美美地把水喝个够。
24小时过去了,我端出黄豆,啊!我惊叫起来,一个个豆宝宝变成了胖娃娃,光亮的很,它的皮肤饱满,富有弹性。有的在一端还稍微露出个小头顶。我把水倒掉,换上新水,冲了两次,把它放在盘子里,并用湿毛巾把它盖上,想让它在温暖、湿润的环境中健康快乐的生长。
又地过了24小时,我端出盘子,揿开毛巾,我被眼前的景象惊呆了。一个个圆溜溜的豆宝宝变成了可爱的小蝌蚪,个个拖起长长的尾巴,白净的尾巴,圆圆的,自然弯曲,像天使一样。
一连过了几天,我的豆宝宝慢慢长大,变成了豆娃娃。头展开了,展开了,就两片子叶吐出了新芽,嫩嫩的绿绿的,生机盎然,它对世界充满了好奇,时不时向外张望着,我知道等待它的路长着呢!今后他要生根发芽,吸收营养水,在阳光的普照下进行光合作用,独立生长,不管风吹雨打,都要顽强地生活,至到开花结果,培育出自己的孩子。
上周六,作文班老师给我们布置了一项特殊的作业:观察豆芽的生长过程。
放学回家后,我兴奋地跑到厨房,抓了一把绿豆,放在塑料杯里,再往杯子里倒了半杯的水。“这样真的会长出豆芽来吗?”我忐忑不安地看着绿豆。妈妈笑着说:“不用看啦,绿豆明天就可以破皮发芽了。”
第二天一大早,我连忙跑去看绿豆,哇!绿豆果真有了变化:有的喝够了水变胖了,有的脱下了绿衣服,还有的伸出了短短的小尾巴,可爱极了!我大喊道:“妈妈,妈妈,快来看呀,我的绿豆发芽了”。我兴奋极了,我心想:绿豆宝宝,你要快快长大呀!下午放学到家后,我迫不及待地跑去看绿豆宝宝们,绿豆已经足足有2厘米长了,绿豆往上窜的劲头真足呀!
接下来的几天,我都精心地照顾它们,每天定时给它们浇水。终于,第五天绿豆已经长出了郁郁葱葱的茎了,这些茎千姿百态,有的像驼了背的老公公,有的像立正的军人,还有的像英文字母。这时,妈妈走过来说:“呦,这些绿豆芽就快长好了,炒起来一定很美味!”想着能吃着自己种的豆芽,我心中又期待又自豪。
有了这次的经历,我才明白农民伯伯的辛苦和劳累,我以后要珍惜粮食。
上周五的时候,梁老师给我们布置了一项任务,让我们回家都去发豆芽,然后写观察日记。
我回到家里,就拿起绿豆。绿豆圆溜溜的,绿绿的,中间有个白白的小圆点,外面穿着件绿油油的大衣。
接着,我拿起了碗,把水给装满,把绿豆小心翼翼的放进碗里。绿豆就在碗里喝水,这样它就不口渴了。我心想;你要快快长大哟。
过了一天,我看见绿豆长胖了,像个胖娃娃,又像个圆圆的小球。但是,它的上衣快撑不住了,看来它把水给喝多了。
下一步,我把水给倒了。然后,拿来了一个有许多窟窿的菜篮子,把绿豆芽小心地放进菜篮子里,绿豆下面铺着一条“毯子”,上面盖着一张“被子”,最后浇水。它们好像胖娃娃在床上睡觉,睡得好香。
又过了一天,太阳火辣辣地照着大地。绿豆的上衣已经裂开了一半,露出了半个白胖子,还长出了一条小尾巴,好像小蝌蚪,又像逗号。它还长出了细细的根和两片绿油油叶子。根特别淘气,趁我不注意的时候,根偷偷的从窟窿钻了出来。我开心地想:我给你取一个名字,叫小豆芽吧,你喜不喜欢。
过了几天,小豆芽长得又高又大,一片片绿油油的叶子,就像一把把小剪刀,咔嚓咔嚓,可锋利了。上面的“被子”,被我的小豆芽给顶起来了,我想:应该不用盖被子了吧。小豆芽和茎在一起的形状,稀奇古怪的,我看不出,是什么东西。
从此,小豆芽和我们一起睡觉,一起起床。
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