题目内容:
Iftheresultoftheseexperimentsisconvincing,______.
A.specialpassagewaysarenecessaryinroad-building B.tunnelswillcauseconflictsbetweenmanandnature
C.tunnelsratherthanspecialbridgesarenecessary
D.newroad-buildingshouldbeminimized
参考答案:
答案解析: