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小学生满分作文:蚕宝宝

时间: 文桦2 小考作文

  作文体裁包括:记叙文、说明文、应用文、议论文。

  作文是以记叙、描写为主要表达方式,以记人、叙事、写景、状物为主要内容的一种文体。

  今天小编要与大家分享的是:小学生满分作文:蚕宝宝,具体内容如下,仅供阅读参考。

  蚕宝宝

  科学课上老师让我们回家养蚕,要求要从开始就要做好记录,看它的生长情况发生的变化,回家后我让我妈弄了一些蚕种子。

  蚕的卵比小米粒大些,白色的有点黑,粘在一片纸的上面。过了两天,卵壳内出现了一个小黑点,越来越明显,到后来竟是一只小小的虫子从卵壳里爬出来了,我知道这就是一只小蚕了。小蚕的身体细小,呈黑褐色,全身满生着毛毛,形态象蚂蚁,老师说叫做蚁蚕,毛毛叫刚毛。

  蚁蚕就能吃桑叶,生长的很快,它的身体中部变青绿色,刚毛变少了,随着身体的不断增大,体色逐渐变淡,青色里面有白色。

  第4天开始,幼虫不吃桑叶了,吐了一些丝状的物质,把肚子和尾巴缠在蚕叶上,一动不动,我以为它在吐丝做茧,老师说它在蜕皮。果然,经过一昼夜时间,即脱去旧皮,换上新衣服。

  刚脱去皮的蚕又开始吃食物了,继续生长,到了一定程度,大约6天又要脱皮。这次我知道它又要蜕皮,就不喂它了,等它蜕完皮再开始为它桑叶吃。这样一共蜕了4次皮,每次蜕皮后吃的食物特别多。老师说它已经长到五岁了,就要吐丝做茧了,让我给它做个小房子。五岁的蚕宝宝身体前边半透明状态,也不吃桑叶了,把头抬得很高,左右摇摆,像是在跳舞,把口里的一根细细的长丝有规律地织在小房子里。3天以后,一只白色的茧就做成了,我的蚕宝宝就在里面睡着了。

  英文翻译

  Silkworm

  Science class the teacher let us go home sericulture, make a record requested from the outset, to see change its growth happens, I let my mom to get home some silkworm seeds.

  Silkworm eggs smaller than a grain of rice a little bigger, a little black and white, top glued to a piece of paper. Two days later, the egg shell there is a small black spot, more and more obvious, and later was actually a tiny insect crawling out of the egg shell, and I know this is a small silkworm up. Small silkworm body small, dark brown, caked students with plush, shape like ants, ants, silkworms, he called the teacher said, plush called setae.

  Ants, silkworms eat mulberry leaves can grow quickly, it's the middle of the body becomes green, bristly fewer, with the increasing of the body, the body color gradually fades, there are blue and white.

  4th day, the larvae eat mulberry leaves, and spit some filamentous material, the belly and tail wrapped around silk leaves, motionless, I thought it was in the cocoon silk to do, the teacher said it in molt. Sure enough, after a day and night time, that is off the old skin, put on new clothes.

  Just off the skin of silkworms and began to eat the food, and continue to grow, to a certain extent, about six days and also peeling. This time I knew it again molt, do not feed it, and wait for it to finish shed skin before you start to eat mulberry leaves it. Thus a total of four times shed skin after each molt eat foods particularly high. The teacher said it has grown to five years old, it is necessary cocoon silk to do, let me give it to be a small house. Silkworms translucent-year-old body in front, do not eat mulberry leaves, and raised his head very high, wavering, as if dancing, the mouth of a thin filament woven regularly in small house . Three days later, he made a white cocoon, my silkworms in there asleep.

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