求助 大全705

juan

1.                         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.fficeffice" />

(A) which doubles to twelve the number of satellites now known as orbiting

(B) doubling to twelve the number of satellites now known to orbit

(C) which doubles to twelve the number of satellites now known in orbit around

(D) doubling to twelve the number of satellites now known as orbiting

(E) which doubles to twelve the number of satellites now known that orbit

答案是B.

求教:known to 和known as有什么区别?

ecsniffer

be known to do something        


(1)know: to have information about something
Smoking is known to increase a person's risk of developing lung cancer.


(2)I've known somebody/something to do something
or somebody/something has been known to do something
used to say that someone does something sometimes or that something happens sometimes, even if it is unusual
People have been known to drive 500 miles just to visit the shop. This type of fish has been known to live for 10 years or more.


know to do something(know: to realize, find out about, or understand something)
She knows not to tell anyone.


know somebody as something


(1)know: to be familiar with a person, place etc
Many people knew him as a local businessman.


(2)know: to think that someone has particular qualities


I knew him as a hard-working, modest, and honest politician.


(3)know: to be able to recognize someone or something


to have a particular name
The main street between the castle and the palace is known as 'the Royal Mile'. Nitrous oxide is commonly known as laughing gas.



    

juan

谢谢ecsniffer。太详细了。

cocoabean

good job, thanks ecsniffer MM