英语作文青蛙的周期变化50字

英语作文青蛙的周期变化50字

先开始我不懂该怎样饲养蝌蚪，就用自来水养它们，但是过了两天就发现有些蝌蚪出现了翻肚子的情况，陆陆续续地又有几只蝌蚪变成这样。于是我请教了妈妈，妈妈告诉我不要用自来水饲养蝌蚪，应该去一些有水藻的池塘里捞一些水回来饲养，也去池塘里挖一些长在池塘边上的水藻放在水里，因为那些水里面有微生物和水藻，水藻可以进行光合作用，可以为蝌蚪提供氧气，微生物则可以给蝌蚪提供食物。
我想到了宝姐姐家里有一个鱼缸，里面养了两条鱼，水是微微泛青的，于是我按妈妈说的去做在里面捞了一些水回去给蝌蚪换上，第二天蝌蚪都不再翻肚子。过了一个星期左右，有两只蝌蚪长了两条后腿，先开始我还以为是它的排泄物，后来慢慢的长长了，我才知道那是它的后脚 。我发现有只蝌蚪的肚子上面一些的地方长了两只小脚，是它的前脚！但是因为时间有限，我不能把照片发上来，虽然它长了前脚，但是尾巴还是挺长的，可能还要一段时间才能慢慢变短。
我原来是挺怕蝌蚪的，可是养了这么久也觉得蝌蚪还是很可爱的。毕竟它们是青蛙的幼体，它们长大之后都是要吃害虫的。
I don't know how to start feeding tadpoles, raising them with tap water, but after two days they found some tadpoles through the stomach, one after another and a few tadpole like this. So I asked my mother, my mother told me not to raise tadpoles with tap water, should go to some algae pond fishing some water back to the pond feeding, digging some long in the pond on the algae in the water, because the water there is bacteria and algae, algae can carry out photosynthesis, can provide oxygen as a tadpole, microorganisms can provide food for tadpoles.
I think there is an aquarium Bao sister home, which raised two fish, the water is slightly green, so I as mom said to do some fishing in water back to second days for tadpoles, tadpoles are no longer turned belly. After about a week, there are two tadpoles long two legs, at first I thought it is excrement, then slowly long, I only know that it is the foot. I found a tadpole belly above some place two feet long, it is! But because of the limited time, I can't take photos, alth......余下全文>>