据英国《每日镜报》报道,墨西哥海岸近日惊现初生连体鲸鱼尸体。
专家指出,连体鲸是灰鲸,有2个头和2条尾鳍,重近半吨重,但体长只有2米,较正常初生灰鲸短了一半,明显发育不良,相信一出生已经夭折。
These conjoined twin gray whales found washed up in a lagoon could be the first of their kind ever discovered.
The Siamese pair were spotted by a group of scientists in Mexico's Laguna Ojo de Liebre, or Scammon's Lagoon.
Scientists suspect the calves were miscarried because the carcass was only seven feet long, compared to the normal newborn gray whale size of 12 to 16 feet, reports outdoor sports website grindtv.com.
Conjoined twins have occurred in other species including fin, sei and minke whales.
But an online search, plus a search of the Natural History Museum of Los Angeles database, did not reveal any records of this type.
It is unknown whether the mother survived the birth.
It's not the first two-headed animal to be discovered recently. A piglet was born with conjoined heads and had two noses, two mouths and three eyes.
He was among a litter of 10 piglets born recently in Nanchang, the capital of eastern China's Jiangxi Province.
英语六级听力备考笔记(二)
六级考试听力备考:常用美国习语2
英语六级听力备考笔记(八)
英语六级听力预测题(5)
当英语六级听力考试遭遇杂音
六级考试听力备考:常用美国习语1
六级听力真题高频词汇及关键词(二)
英语六级听力讲义与笔记:第3讲
英语六级听力过关技巧及例题分析(27)
英语六级考试听力备考(1)
英语六级听力历年真题总结:常见句式和短语(12)
英语六级听力备考笔记(七)
英语六级听力预测题(2)
英语六级听力历年真题总结:常见句式和短语(13)
英语六级听力重要场景小词考点
英语六级听力备考笔记(一)
英语六级听力正确答案的特征
英语六级考试听力备考复习材料(4)
英语六级听力预测题(1)
英语六级听力考试必看易混淆词汇总结
英语六级听力历年真题总结:常见句式和短语(7)
英语六级考试听力备考(2)
英语六级听力一个月冲刺计划必看
四六级备考:三步走突破听力瓶颈
英语六级听力历年真题总结:常见句式和短语(5)
四六级复合式听写方法有讲究
备考六级听力,你的复习材料用对了吗?
英语六级听力备考笔记(六)
六级考试听力备考:常用美国习语6
英语六级考试听力备考复习材料(6)
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |