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[Lory]

Scientists have identified an asteriod, 2000 BF19, that is about half a mile wide and, if it strikes Earth, it can do tremendous damage to part ot the planet but probably not cause planetwide destruction.
(A) and, if it strike 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 Earht, 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
出自GWD+天山30回測驗 第19回之第27題
不太了解A與C的分別,請指點.

[freshmanduke]

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