She needs to buy a more powerful computer for home so that she can be in ____ communication with her European colleagues.
(A) constant (B) always (C) persistent (D) even
2013-12-23 23:03:01 補充：
constant = 不中斷
persistent = 堅持的
2013-12-24 02:30:56 補充：
Generally speaking, I don't use Chinese to answer, but since I have no idea whether you can understand English explanation. A better way to explanation is:
2013-12-24 02:33:48 補充：
"constant" is for uninterrupted communication.
"persistent" is for a strong-willed (意志堅強的) situation. It means, no matter what the situation is she will communicate with her colleagues.
2013-12-24 02:35:08 補充：
Having a more powerful computer will NOT increase one's will (毅力), so choosing "persistent" doesn't make sense.
2013-12-24 02:57:40 補充：
Of course, having a more powerful computer will NOT insurance uninterrupted communication. Nevertheless, a more powerful computer means a newer one, so theoretically, it will have less problem with connection to the Internet.