Hair and evolution 毛发和进化论_BBC_英语广播-查字典英语网

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. I discovered the other day that I have a __________ relative living in Greenland. She's actually my first cousin.

direct close good near

2. Darwin explained his famous __________ theory of natural selection in 1859 in his book 'On the Origin of Species'.

revolutionary evolutionary evolution extraordinary

3. If babies wear too many clothes in hot weather, they are at __________ of overheating.

risk danger likely possibility

4. Daniel __________ hard work. He's happiest when he's got lots of problems to solve at the office.

thrives at thrives on thrives with thrive on

5. Our human ancestors lost hair because this allowed them to sweat with the greatest __________.

effort deficiency efficiency sufficiency

答案 1. 阅读课文并回答问题。

1. True or false? All primates are covered in fur.

False. Humans only have a little hair on their bodies compared to other primates.

2. Who was Charles Darwin?

He was a famous evolutionist.

3. Why was moving to the savannah a problem for our early ancestors?

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