问题
选择题
Before a problem can be solved, it must be obvious ______ the problem itself is.
A. what B that C which D why
答案
答案：A
本题考察的是名词性从句中主语从句。从句中缺表语，排除B和D；又因题目没有给出problem的范围，故选A；
搜题请搜索小程序“爱下问搜题”
Before a problem can be solved, it must be obvious ______ the problem itself is.
A. what B that C which D why
答案：A
本题考察的是名词性从句中主语从句。从句中缺表语，排除B和D；又因题目没有给出problem的范围，故选A；