49. The cameras of the Voyager II spacecraft detected six small, previously unseen moons circling Uranus, which doubles to twelve the number of satellites now known as orbiting the distant planet.
B.doubling to twelve the number of satellites now known to orbit
like A, uses known as orbiting rather than known to orbit, a phrase that is more idiomatic in context. B, therefore, is the best answer.
本人认为 这道题的 A, B 选项并不在于 as 和 to 的区别！ 这里的“which" 不是指 “the cameras of the Voyager II spacecraft ", 也不是指 "Uranus", 而是指 "The cameras of the Voyager II spacecraft detected six small" 这句话。 所以， A 错在 "which" 不能指代前面所说的话。
The cameras of the Voyager II spacecraft detected six small, previously unseen moons circling Uranus, doubling to twelve the number of satellites now known as orbiting the distant planet.
我可能没有写的清楚，刚刚把帖子改过了，我想请教的是b/d，ets提了一句说是uses known as orbiting rather than known to orbit, a phrase that is more idiomatic in context. B, therefore, is the best answer. 这个是b/d的区别，我查了不少字典关于known as / to 的区别，没有找到，我想请教的 是这个。
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发表于 2003-10-21 12:32:00
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