Size matters when it comes to extinction risk 动物的体型可能是决定其灭绝的关键因素
最新研究报告显示,世界上体型最大和最小的动物濒临灭绝的可能性最高。科学家认为,动物灭绝的风险取决于它们的大小,因此需要采取行动保护体型极端的动物。目前,重型动物受到捕猎的威胁,而小型动物正因为环境污染和树木砍伐而失去生命。请听报道。
From the hog-nosed bat to the banana frog, some of the world's smallest and most endangered animals aren't exactly well known.
Researchers fear these tiniest of creatures are being overlooked in conservation efforts.
An international team made a data base of thousands of animals to look at the relationship between body mass and extinction risk.
A clear pattern emerged: animals at both ends of the scale face bigger extinction risks than those in the middle.
Human hunting threatens the heavyweights, meanwhile featherweights are losing vital habitat as land is cleared for development.
Scientists say urgent action is needed on both fronts to help slow the ongoing wave of extinctions.
词汇表 hog-nosed 长着猪鼻子的(这里特指蝙蝠的品种)
endangered (动植物)濒危的
overlooked 被忽略
conservation (对动植物、自然环境的)保护
data base 数据库
extinction risk 灭绝风险
emerged (经过观察、研究)出现了
at both ends of the scale (体型、重量等)处于两个极端的
heavyweights 重型动物
featherweights 羽量级动物,小型动物
ongoing 持续的
测验 请听报道并回答下列问题。
1. What is the relationship between body mass and extinction risk that scientists found?
2. Why are featherweights losing their habitat?
3. What do the scientists say we should do about the wave of extinctions?
4. Which word in the text means 'a regular or repeated way in which something happens'?
答案 1. What is the relationship between body mass and extinction risk that scientists found?
Animals at both ends of the scale face bigger extinction risks than those in the middle.
2. Why are featherweights losing their habitat?
Featherweights are losing their vital habitat because the land is being cleared for development.
3. What do the scientists say we should do about the wave of extinctions?
Scientists say urgent action is needed on both fronts to help slow the ongoing wave of extinctions.
4. Which word in the text means 'a regular or repeated way in which something happens'?
Pattern.
牛津实用英语语法:139 ought的各种形式
牛津实用英语语法:149 表示无义务的各种形式
牛津实用英语语法:173用来表示习惯性动作
牛津实用英语语法:145 肯定句中 must和 have to的区别
牛津实用英语语法:153 needn't have(done)和did't have done
牛津实用英语语法:175形式
牛津实用英语语法:112 对一个说法作补充
牛津实用英语语法:171 think, assume和expect
牛津实用英语语法:199 一般现在时用来表示将来
牛津实用英语语法:133 may/might+完成式
牛津实用英语语法:144 must和have to的各种形式
牛津实用英语语法:180过去式其他用法
牛津实用英语语法:143 ought/should与完成式连用
牛津实用英语语法:167 其他可能的用法
牛津实用英语语法:164 现在进行时形式
牛津实用英语语法:140 should的各种形式
牛津实用英语语法:156 must表示推断
牛津实用英语语法:148 need 的各种形式
牛津实用英语语法:111 附加评论
牛津实用英语语法:157 must与may/might的比较
牛津实用英语语法:165 拼写
牛津实用英语语法:166 用法
牛津实用英语语法:141 ought/should与must和 have to的比较
牛津实用英语语法:150 need not与其他各种形式的区别
牛津实用英语语法:142 ought/should与进行式连用
牛津实用英语语法:109 对他人说话表示同意或不同意
牛津实用英语语法:160 will和should表示假设
牛津实用英语语法:196 过去完成时在间接引语中的用法
牛津实用英语语法:179过去式主要用法
牛津实用英语语法:147 need not,must not和 must
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