题目内容
下列问题是基于如下描述：设有一个数据库，包括S、J、P、SJP四个关系模式如下：供应商关系模式S(SNO，SNAME，CITY)，零件关系模式P(PNO，PNAME，COLOR，WEIGHT)，工程项目关系模式J(JNO，JNAME，CITY)，供应情况关系模式SJP(SNO，PNO，JNO，QTY)，假定它们都已经有若干数据。
“找出使用供应商名为‘红星’的供应商所供应的零件的工程名”的SELECT语句中将使用的关系有
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我国行政体系的内部监督，是“他律”或“客体”监督。（）
在深圳证券交易所,最优5档及时成交剩余撤销申报,指以对手价格为成交价格,与申报进入交易主机时集中申报簿中对手方最优5个价位的申报队列依次成交,未成交部分自动撤销。()
【C16】
听力原文： Our environment is being polluted faster than nature and man's present efforts can prevent it. Time is bringing us more people, and more people will bring us more industry, more motor vehicles, larger cities, and the growing use of man-made materials.
What can explain and solve this problem？ The fact is that pollution is caused by man by his desire for a modern way of life. We make increasing industrialization our chief aim. For its sake, we are willing to sacrifice everything: clean air, pure water, good food, our health and the future of our children. There is a constant flow of people from the countryside into the cities, eager for the benefits of modern society. But as our technological achievements have grown in the last twenty years, so pollution has become a serious problem.
Isn't it time we stopped to ask ourselves where we are going and why？ It reminds one of the story about the airline pilot who told his passengers over the loudspeaker: "I'ye some good news and some bad news. The good news is that we're making rapid progress at 530 miles per hour. The bad news is that we are lost and don't know where we're going." The sad fact is that this becomes a true story when applied to our modern society.
Why can't man prevent the world from being polluted？
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