Scientists wanted to find out how the process of aging could be slowed down.
题目
Scientists wanted to find out how the process of aging could be slowed down.
The theory of natural selection provides an explanation of the evolutionary process.
答案
科学家们想要找出使衰老变缓的方法.
他们有关自然选择的理论提供了进化过程的解释.
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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