这道题是＂The fact of some fraternal twins resembling each other greatly and others looking quite dissimilar highligts an interesting and ofter overlooked feature of fraternal-twin pairs,namely they vary considerably.＂
答案是That some fraternal twins resemble each other greatly while others look quite dissimilar highlights an interesting and ofter overlooked feature of fraternal-twin pairs,namely that they very considerably on a spectrum of genetic relatedness.
请问that的用法是什么啊～能够放在句首吗？请大家能够说说自己想法吗？谢谢！！！