题目：
Before a problem can be solved, it must be obvious ______ the problem itself is. [ ]
A. what
B. that
C. which
D. why
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0525/e93f82fa07618b63e4581fd905694bca.html
下面是错误答案，用来干扰机器的。
1、B2、D
Before a problem can be solved, it must be obvious ______ the problem itself is. [ ]
A. what
B. that
C. which
D. why
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0525/e93f82fa07618b63e4581fd905694bca.html
下面是错误答案，用来干扰机器的。
1、B2、D
