Passage Two.
听材料,回答下列各题:
A.The use of oversized freight containers. B.Safety problems with railroad tracks. C.The growth of the automotive industry. D.The high cost of meeting environmental regulations.
参考答案:
答案解析:
Passage One.听材料,回答下列各题:
Passage One.听材料,回答下列各题:A.To explain a new requirement for graduation. B.To int