题目内容

设有以下窗体单击事件过程：Private Sub Form_Click()a=1 For i=1 to 3 Select Case i Case 1,3 a=a+1 Case 2,4 a=a+2 End Select Next i Msgbox aEnd Sub打开窗体运行后，单击窗体，则消息框的输出内容__________ 。

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【】是窗体上用于显示数据、执行操作、装饰窗体的对象。

假设在关系模式R(U)中，X、Y、Z都是U的子集，且Z=U-X-Y。若x→→Y，则称 X→→Y为【】。

The Californian coastline north and south of Silicon Valley is a trend-setting sort of place. Increasingly, the home interiors of the well-heeled there tend toward one of two (1) . Houses are (2) light flooded, sparse and vaguely Asian in (3) , with perhaps a Zen fountain in one corner, a Yoga area in another. Or they resemble electronic control rooms with all sorts of (4) , computers, routers, antennae, screens and remote controls. Occasionally, both elements are (5) . "She" may have the living room and’public areas, (6) "he" is banished with his toys up or down the stairs.Currently, the gadget lovers have powerful allies. Many of the largest companies in the consumer-electronics, computer, telecoms and internet industries have made a strategic decision to (7) visions of a "digital home", "eHome", or "connected home". Doubting that (8) from corporate customers will ever (9) to the boom levels of the late 1990s, Microsoft, Intel, Sony, Verizon, Comcast, Hewlett-Packard, Apple and others see the consumer (10) their best chance for growth and will be throwing a bewildering (11) of home "solutions" at (12) in the coming months and years.To understand what the (13) ultimately have in (14) it is best to visit the (15) homes that most have built on their campuses or at trade shows. (16) cosy and often intimidating, these feature flat screens almost everywhere, (17) electronic picture frames in the bedroom from the large TV-substitute in the living room. Every (18) has a microchip and can be (19) to, typed into or clicked onto. Everything is (20) to a central computer through wireless links. Read the following text. Choose the best word (s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1.4（）

A. equipment
B. devices
C. facilities
D. gadgets

12. SQL语言支持数据库三级模式结构。在SQL中，外模式对应于视图和部分基本表，模式对应于基本表全体，内模式对应于【】。