问题
选择题
____ both sides accept these terms will everlasting peace be established in this region. [ ]
A. Only if
B. Unless
C. As long as
D. If only
答案
答案：A
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____ both sides accept these terms will everlasting peace be established in this region. [ ]
A. Only if
B. Unless
C. As long as
D. If only
答案：A