电子数据处理系统(EDP)、管理信息系统(MIS)、决策支持系统(DSS)，一般来讲它们之间的关系应该是______。
A．DSS依赖于MIS，MIS依赖于EDP
B．MIS依赖于DSS，DSS依赖于EDP
C．EDP依赖于MIS，MIS依赖于DSS
D．DSS依赖于MIS，EDP依赖于MIS
参考答案：A
解析： 电子数据处理系统(EDP)向管理信息系统(MIS)、决策支持系统(DSS)和专家系统(ES)提供所需数据，它是其他信息系统的基础。而且DSS的信息依赖于MIS，MIS的信息依赖于EDP。
| 完形填空。 | |||
| Everyone has his or her own dream and everyone is trying his or her best to realize it. On the morning of May 20th, 1927, Charles took off from the muddy (泥泞的) airfield in New York and _1_ Paris. Fourteen hours later, he was still _2_. During the fourteen hours he had some nervour __3_. The fog was so thick that he could hardly see anything. _4_, he was not afraid. He had flown a plane many times and knew _5_ to deal with the problems. Now he had _6_ to do but go on. It was not easy for him to _7_ this trip. He waited for a long time. However, he never _8_ his dream. At last he told himself that a non-stop flight between New York and Paris was possible. And now he was above the Atlantic. As he flew _9__ the surface of the water, he could see the waves in the moonlight. The _10_ of the water seemed like music in his ears. He _11_ his plane as his partner. After thirty-seven hours in the air _12_ sleep, Charles successfully landed in Paris. He began to _13_ a little. He smiled and spoke to himself, "I made it. My dream came true." More than a thousand peopl  e were there to _14_ him as a hero. He became _15_ overnight. His name was on everyone's lips and he even appeared on TV. | |||
| ( )1. A. looked for ( )2. A. climbing ( )3. A. times ( )4. A. Instead ( )5. A. how ( )6. A. everything ( )7. A. make ( )8. A. took up ( )9. A. near ( )10. A. sound ( )11. A. lost ( )12. A. with ( )13. A. worry ( )14. A. see ( )15. A. happy | B. broke off B. running B. speeches B. Also B. what B. nothing B. refuse B. began with B. close B. noise B. flew B. for B. relax B. watch B. worried | C. set off C. flying C. moments C. Therefore C. when C. anything C. catch C. gave up C. up C. voice C. regarded C. without C. explain C. welcome C. famous | D. headed for D. jumping D. words D. However D. where D. something D. follow D. made up D. high D. song D. looked D. on D. sleep D. visit D. surprised |
乙（C4H8）
丙（C4H8Br2）