题目内容
_______ the math problem is very difficult, _______ some students can still work it out.
[ ]
A.Although, but
B.Although,/
C.But,/
D./, so
答案:B
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题目内容
_______ the math problem is very difficult, _______ some students can still work it out.
A.Although, but
B.Although,/
C.But,/
D./, so