求教大全-7-20

One analyst predicts that Hong Kong can retain its capitalist ways after it becomes part of mainland China in 1997 as long as a capitalist Hong Kong will be useful to China; that a capitalist Hong Kong is prosperous; and that Hong Kong will remain prosperous as long as it retains its capitalist ways. If the predictions above are correct, which of the following further predictions can logically be derived from them?
(A) If Hong Kong fails to stay prosperous, it will no longer remain part of mainland China.
(B) If Hong Kong retains its capitalist ways until 1997, it will be allowed to do so afterward.
(C) If there is a world economic crisis after 1997, it will not adversely affect the economy of Hong Kong.
(D) Hong Kong will be prosperous after 1997.
(E) The citizens of Hong Kong will have no restrictions placed on them by the government of mainland China.

文中的分析家给出了三个预言（前提），一、只要香港资本主义化对中国有用，那么香港在九七后可以保留资本主义方式；二、资本主义化的香港是繁荣的；三、只要保留资本主义方式，香港将能持续繁荣。

答案是B，但我认为还应有一项前提才能得到B，繁荣的香港对中国有用。

，其它答案好象也不太合适，盼指教，谢谢。

谢谢， 但我考试时可以这么想吗？“出题人可能认为繁荣的香港对中国有用不需要假设”，新东方老师一般都说要依照文章内容答题，不可主观臆测。