下面是范文網(wǎng)小編分享的動物的作文模板3篇 寫動物的作文模板,供大家品鑒。
動物的作文模板1
as is depicted in the cartoon, both the cat and snake are on the table, with tears in their eyes, waiting to be eaten by humans. through this picture, the drawer condemns the eating of wild animals.
eating wild animals gives rise to a lot of negative effects. in the first place, as many wild animals carry parasites, when we eat them, the parasites enter our bodies, thus causing a lot of illnesses. in the second place, since animals are an indispensable part of our environment, the extinction of some animals may disturb the natural balance. last but not least, eating wild animals is cruel.
since eating animals causes so many harms, we should work together to put an end to the problem. on the one hand, the government should make stricter laws to prohibit people from eating wild animals. on the other hand, all the people should realize the harms of eating wild animals and refrain from doing so.
動物的作文模板2
五一長假里,我從墻角處捉來一只小蜘蛛,把它放進一個玻璃瓶里。蜘蛛放進去以后,我又找來一只死蒼蠅,放在玻璃瓶里,蜘蛛紋絲不動,我立刻用手敲擊玻璃瓶,蜘蛛就向其它地方爬去。
為了搞清楚蜘蛛為什么不吃死蒼蠅,第二天,我又跑到玻璃瓶前觀察,看到蜘蛛還是不吃,我有點著急了,不過玻璃瓶中間多了一個蜘蛛網(wǎng),蜘蛛在網(wǎng)上安靜地趴著。
這時,我想:昨天死蒼蠅、死昆蟲沒被吃掉是不是由于沒有網(wǎng)呢?所以,我又將死蒼蠅用牙簽把死蒼蠅放在蜘蛛網(wǎng)上,可蜘蛛還是一動不動,接著我又用牙簽輕輕地震動了一下蜘蛛網(wǎng)上的死蜘蛛,突然,蜘蛛好像有了反應,向死蜘蛛的方向爬去,我把牙簽收回,它就停了下來,我又用牙簽觸動蜘蛛網(wǎng)上的死蒼蠅,蜘蛛網(wǎng)開始顫動,蜘蛛就又向這里爬來。哦!我知道了:原來蜘蛛是靠蜘蛛網(wǎng)的顫動來發(fā)現(xiàn)昆蟲的。
于是,我又做了一次實驗,我將牙簽放在蜘蛛網(wǎng)上的死蒼蠅身上,快速的顫動,蜘蛛網(wǎng)的振動越來越大,蜘蛛產(chǎn)生的感覺好像也越來越大,蜘蛛便急促地爬過來,等蜘蛛馬上要碰到死蒼蠅時,我又將牙簽收回,只見蜘蛛尾部很快噴出粘乎乎的絲將蒼蠅捆住,接著又看著蜘蛛的背一動一動的,好像在吸食蒼蠅,過了一會,蜘蛛網(wǎng)上就剩下一個完整的蒼蠅殼了。這個實驗證明了蜘蛛只吃動的昆蟲。
為了確定這一點,我又翻了一下書籍,書上寫著:蜘蛛是食肉性動物,其食物大批是昆蟲或其他節(jié)肢動物。但口無上顎,不直接吞食固體食物,而是冉冉地吸食。當昆蟲等動物觸網(wǎng)時,會使勁在網(wǎng)上反抗,使網(wǎng)絲顫動而使蜘蛛很快覺察,蜘蛛便順著縱向絲向獵物爬去,用蛛絲包裹獵物,牢固于網(wǎng)上,先用螯肢內(nèi)的毒腺滲出毒液注入捕捉獵物體內(nèi),將其殺死,再由中腸分泌的消化酶灌輸在被螯肢撕碎的捕獲物的結(jié)構(gòu)中,很快將其闡明為液汁,而后吸進消化道內(nèi),結(jié)果吃剩下的體殼,就被完整的棄留在蛛網(wǎng)上了。
通過做實驗和書上寫的資料,我終于明白了:蜘蛛是靠網(wǎng)來捕食獵物的只要網(wǎng)上有活昆蟲,昆蟲在網(wǎng)上產(chǎn)生顫動,蜘蛛就會立刻爬過去將獵物殺死,并吸食。
啊!我終于知道蜘蛛是怎么捕食怎么吃食的了!
動物的作文模板3
many wild animals are facing the danger of extinction,because the environment that they are living in has changed greatly。for example,with the developmet of cities,the using of insecticide and serious pollution,their living areas have bee narrowcr and narrower。many of the wild animals,now are confronted with food crisis。at the same time,man is killing off species just for getting their fur,skin,horns,teeth and meat。 in order to protect our resources of ecology,people should realize that the loss of any species is at least the loss of source of knowledge and a source of natural beauty。there fore,measures of the following should be taken:pollution standards are made to keepdown poisons; killing off certain rare species is prohibited; national parks should be set up as wild life,reserves。 only if we human beings take some drastic measures can wild animals be preserved。
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