题型:问答题 简答题 Tom was playing computer games all night.________he was late for class.[ ]A. That's because B. That's whyC. It's how D. That's how 查看答案
题型:问答题 简答题 根据《环境影响评价技术导则非污染生态影响》中生态影响经济损益分析的一次性估价原则为使估价具有可比性,折现年限应依据()确定。A.使用寿命B.经济寿命C.影响时间D.预測时限 查看答案