问题 填空题

在“查询设计器”中已设置连接条件为“xscj.姓名=xsda.姓名”,若要在查询结果中显示xsda表中所有记录及xscj表中满足条件的记录,则连接类型应为 【20】

答案

参考答案:右连接

问答题

       列宁指出:“资产阶级革命面前只有一个任务,就是扫除、摒弃并破坏旧社会的一切桎梏。任何资产阶级革命完成这个任务,就是完成了它所应该做的一切:加强资本主义的发展。”以英、法早期资产阶级革命情况看,你认为列宁这一观点是否正确并说明理由。请分别指出英、法资产阶级革命的任务是什么?举例说明英、法资产阶级是通过哪些形式完成其革命任务的?

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

单项选择题

If there is one thing scientists have to hear, it is that the game is over. Raised on the belief of an endless voyage of discovery, they recoil from the suggestion that most of the best things have already been located. If they have, today’s scientists can hope to contribute no more than a few grace notes to the symphony of science.

A book to be published in Britain this week, The End of Science, argues persuasively that this is the case. Its author, John Horgan, is a senior writer for Scientific American magazine, who has interviewed many of today’s leading scientists and science philosophers. The shock of realizing that science might be over came to him, he says, when he was talking to Oxford mathematician and physicist Sir Roger Penrose.

The End of Science provoked a wave of denunciation in the United States last year. "The reaction has been one of complete shock and disbelief, "Mr. Horgan says.

The real question is whether any remaining unsolved problems, of which there are plenty, lend themselves to universal solutions. If they do not, then the focus of scientific discovery is already narrowing. Since the triumphs of the 1960s—the genetic code, plate tectonics, and the microwave background radiation that went a long way towards proving the Big Bang—genuine scientific revolutions have been scarce. More scientists are now alive, spending more money on research, that ever. Yet most of the great discoveries of the 19th and 20th centuries were made before the appearance of state sponsorship, when the scientific enterprise was a fraction of its present size.

Were the scientists who made these discoveries brighter than today’s That seems unlikely. A far more reasonable explanation is that fundamental science has already entered a period of diminished returns. "Look, don’t get me wrong," says Mr Horgan. "There are lots of important things still to study, and applied science and engineering can go on for ever. I hope we get a cure for cancer, and for mental disease, though there are few real signs of progress.\

John Horgan().

Ⅰ. has published a book entitled The End of Science

Ⅱ. has been working as an editor of Scientific American

Ⅲ. has been working many years as a literary critic

Ⅳ. is working as a science writer

A. Ⅰ and Ⅱ

B. Ⅰ

C. Ⅰ and Ⅳ

D. Ⅰ, Ⅱ and Ⅳ