(2013年高考上海卷)

司9080习元广慧东件449f费网途升科限上上优4ae5公技软-479f学有 30. They promised to develop a software package by the end of this year, ______ they might have.

A. however difficult B. how difficult

科a437afd4技量网件449f费广b4420b0c软慧上公元有是升28ba1e70学上-479f4ce1司9080习东限上上b9e2优4ae5径途

C. whatever difficulty D. what difficulty

答案：C

解析： 题干的意思是：“他们承诺，无论可能有什么困难，到今年底都要开发出一个软件包”。本题是一个主从复合句，由句意“无论”可知是让步状语从句，从而排除选项B，D。从句中的关键词是实义动词have，用还原法，可知是短语have difficulty，所以从句为whatever difficulty they might have。如果选B，则从句要改为：however difficult it might be。

司9080习元得西网法升28ba1e70件449f费根有是831a学上-479f4ce1慧上公途fed1fa60软广b4420b0c52a884dd优4ae5径896d的科a437afd499836d5541dc技量点限上上b9e2cf76东