The problem with big brains 聪明大脑所带来的问题

研究显示，有一个体积较大的大脑可能是造成一些大型哺乳动物灭绝的原因之一。这是因为大脑工作时需要消耗许多能量，再加上大脑体积大的动物通常有着较长的妊娠期，这也就意味着它们繁殖得很慢。本期《凯哥聊英语》探讨大体积大脑所引起的困扰。

测验与练习

1. 阅读课文并回答问题。

1. Why are big brains 'expensive'?

2. Which phrase means 'shared duty'?

3. What does Gonzales-Suarez believe the scientific community should do about large animals?

4. Why did sponges lose their brains?

5. True or false? Mammals with big brains increase the risk of extinction for humans.

2. 请你在不参考课文的情况下完成下列练习。选择一个意思合适的单词填入句子的空格处 。

1. Being a famous, sexy, wealthy, popular celebrity does come with one big _________: you have no privacy.

downside asset habitat trait

2. A mother tiger protecting her _________ will viciously attack potential threats.

megafauna habitat young species

3. Sponges _________ strength to strength since losing their brains.

gone from go from have gone from are going to

4. If you tell him directly it will only _________ the problem. Find another way to let him know.

prevent excruciate evolve exacerbate

5. She's the _________ person I know! Straight A-grades again last year.

biggest brained brainiest most brainy brainest