交换寄存器SI、DI的内容，正确的程序段是( )。
A. PUSH SI
B. PUSH SI
C. PUSH DI PUSH DI
D. POPSI POPDI
E. POPDI POPSI
F. MOVAX，SI
G. MOV AX，SI
H. MOVSI，AX MOV BX，DI
I. MOVDI，BX XCHG BX，AX
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下列选项中允许用户监控各种网络信息的是( )。
A. Net Watcher
B. Freecell
C. System Monitor
D. Remote Registry Service
It is easy for many kinds of insects to live in the desert because ______.
A. They only need a little food to survive
B. they are not afraid of the heat
C. They are too small to be attacked by other animals
D. they have a skin which is against water
The best title for the text would be ______.
A. Desert Animals and Insects
B. Kangaroo Rat and Camel
C. The Climate in Desert
Desert Plants
在Windows 98中，下列哪一种软件组件为应用程序提供了一种极其方便的途径去控制各种多媒体设备，使多媒体设备的宾制操作与特定的硬件无关 ( )。
A. GDI
B. OpenGL
C. MCI
D. VFW
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