请问大全198

1.        Canadian scientists have calculated that one human being should be struck every nine years by a meteorite, while each year sixteen buildings can be expected to sustain damage from such objects.

(A) one human being should be struck every nine years by a meteorite

(B) a human being should be struck by a meteorite once in every nine years

(C) a meteorite will strike one human being once in every nine years

(D) every nine years a human being will be struck by a meteorite（D）

(E) every nine years a human being should be struck by a meteorite

看过了之前的解释，还不大明白should和will的区别，我觉得should在这好像好，这里没有将来的意思啊，请教

不是每个人每隔9年就该被砸上一次吧？

C中的one human being特指某个人，使逻辑意思不合理，“某个特定的人每九年都会被运世击中”

这个可见白勇语法。 p308.

这里是客观事实，不是虚拟语气！

我也想知道为什么不是用虚拟语气。