求解gwd-9-q27

rinalin1992

Scientists have identified an asteroid, 2000 BF19, that is about half a mile wide and, if it strikes Earth, it can do tremendous damage to part of the planet but probably not cause planetwide destruction.

A. and, if it strikes Earth, it can do tremendous damage to part of the planet but

B. and, if it would strike Earth, part of the planet could experience a tremendous amount of damage but it would

C. and that, if it were to strike Earth, could do tremendous damage to part of the planet but would

D. and that, if Earth is struck by it, can do part of the planet tremendous damage, but it would

E. and that, if it strikes Earth, it could experience a tremendous amount of damage but

我对加粗的部分有疑惑：
that应该是先行词引出限制性定语从句修饰asteroid吧。
那么也就是说，如果有插入语/同位语，that和被修饰的先行词是可以被隔开的？

谢谢大牛解答！！！