问题
选择题
______ I admit that the problems are difficult, I don't agree that they can't be solved.[ ]
A. In case
B. While
C. As
D. Because
答案
答案：B
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______ I admit that the problems are difficult, I don't agree that they can't be solved.[ ]
A. In case
B. While
C. As
D. Because
答案：B