| With today’s advancements in
communications combined with computers and handhold devices, we now have
multiple ways to connect and socialize regardless of the distance. However, the
communication method of choice is often dictated by one’s age, and each age
group bas gravitated (受吸引) to that method with which they have become most
familiar and comfortable. For example, most of those in our young generation have embraced email and cell phones. We use email to communicate with our friends or business associates because it’s easy and convenient, especially for spanning times zones. Email also allows us time to work out our thoughts as we create the message and is less intrusive than a phone call. Most of us also own cell phones, although the primary reason is often to have a means of contacting others in the event of an eme A. The author shows no interest in the change of communication methods. B. The author thinks the new way is more convenient and helpful. C. The author believes it is useless to change the communication method. D. The author can accept the change but insist on the traditional way. [简答题]{{B}}A Job Wanted Ad{{/B}}
Changlong (长龙) Corporation Company is a famous manufacturer and marketer of printers, with its headquarters in Dalian. It has more than 20 branches over the country. We are seeking for one sales manager now.
Qualifications：
● Chinese citizen, aged 30--40
● With college diploma in Marketing, Management or related fields
● Minimum of 3 years’ experience in sales
● Proficiency in English speaking and reading
● Good at using computer
Those interested please contact Mr. Smith at 76834453.
[单项选择]Conversation Two
A. To put an ad in the newspaper.B. To renovate the apartment. C. To rent the apartment. C. To sell the apartment. [单项选择]A. They are unfriendly to the Gypsies.
B. They admire the musical talent of the Gypsies. C. They are envious of the Gypsies. D. They try to put up with the Gypsies. [单项选择]一条执行考察任务的科考船，现从B地沿河驶向入海口，已知B地距入海口60千米，水速为每小时6千米，若船顺流而下，则用4小时可以到达入海口，该船完成任务从入海口返回并按原速度航行4小时后，由于海水涨潮，水流方向逆转，水速变为每小时3千米，则该船到达B地还需再航行多少小时
A. 5 B. 4 C. 3 D. 2 [简答题]设有关系模式R(A，B，C，D) ，数据依赖集F=A→B，B→A，AC→D，BC→D，AD→C，BD→C,A→→CD,B→→CD.
1)求R的主码。并判断R是否为第四范式为什么 2)R是不是BCNF为什么R是不是3NF7为什么 [填空题]下面程序是对8255进行初始化，使其A口按方式0______，B口按方式0输出，C口上半部按方式0______，C口下半部按方式1输入。
MOV DPTR，#7FFFH
MOV A，#95H
MOVX @DPTR，A
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