The fact of some fraternal twins resembling each other greatly and others looking quite dissimilar highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary considerably on a spectrum of genetic relatedness. - The fact of some fraternal twins resembling each other greatly and others looking quite dissimilar highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary considerably
- That some fraternal twins resemble each other greatly while others look quite dissimilar highlights an interesting and often overlooked feature of fraternal-twin pairs, namely that they vary considerably
- With some fraternal twins resembling each other greatly and others looking quite dissimilar, it highlights an interesting and often overlooked feature of fraternal-twin pairs, namely considerable variation
- With some fraternal twins resembling each other greatly and others looking quite dissimilar, it is a fact that highlights an interesting and often overlooked feature of fraternal-twin pairs, namely a considerable variation
- Because some fraternal twins resemble each other greatly and others look quite dissimilar, this fact highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary considerably
大家请看D选项：with引独立主格， it is fact that ...强调it指代that从句，而且意思也对，为什么D不可？ with sth doing and sth. doing, it is a fact that..., namely .... 其中an interesting and often overlooked feature of fraternal-twin pairs, namely a considerable variation on a spectrum of genetic relatedness 平行且很长，所以用it is a fact that..... 正常语序：with sth doing and sth doing, that ...namely ....is a fact.
大家请看D选项：with引独立主格， it is fact that ...强调it指代that从句，而且意思也对，为什么D不可？ with sth doing and sth. doing, it is a fact that..., namely .... 其中an interesting and often overlooked feature of fraternal-twin pairs, namely a considerable variation on a spectrum of genetic relatedness 平行且很长，所以用it is a fact that..... 正常语序：with sth doing and sth doing, that ...namely ....is a fact. 大家请看D选项：with引独立主格， it is fact that ...强调it指代that从句，而且意思也对，为什么D不可？ with sth doing and sth. doing, it is a fact that..., namely .... 其中an interesting and often overlooked feature of fraternal-twin pairs, namely a considerable variation on a spectrum of genetic relatedness 平行且很长，所以用it is a fact that..... 正常语序：with sth doing and sth doing, that ...namely ....is a fact. | 
