黄酮类化合物的准确定义为

A．两个苯环通过三碳链相连的一类化合物
B．γ-吡喃酮
C．2-苯基色原酮
D．2-苯基苯并α-吡喃酮
E．2-苯基苯并γ-吡喃酮

Future Computer Trends:
The components of a PC will be built into the (6) and large plasma or electroluminescent flat panel display hanging on a partition wall will act as both a (7) and videophone display.
A high resolution, touch sensitive LCD (8) into desktop will allow pan-based pointing and data input. In the home, meanwhile, computers will become as ubiquitous as TVs.
Computer interfaces will be far friendlier than (9) graphical user interfaces (GUI) of today. Computers will use "human interfaces" based on multimedia.
RISC microprocessors will finally obliterate the ever thinning gap between workstations and PCs. Similar advances in nonvolatile flash memory will lead to the replacement of magnetic (10) disks with electronic "silicon disks".

A．desk

B．monitor

C．built

D．mouse-driven