正确答案E : Australia embryologists have found evidence to suggest that the elephant is descended from an aquatic animaland that its trunk originally evolvedas a kind of snorkel. 疑问: 1.‘and ’两边应该平行 但是为 么 that the elephant is descended from an aquatic ,而 that its trunk originally evolved 一个一般现在时,一个过去时,这样平行吗?
2.假设上边句子成立,两个都表示在陈述事实,那么 把evolved改成 was evolved 可以吗?
snor?kel [countable] a tube that allows someone who is swimming to breathe air under water
o?rig?i?nal?ly in the beginning, before other things happened or before things changed: The family originally came from France. The building was originally used as a prison. We originally intended to stay for just a few days.