上海证券交易所于1993年开办了以国债为主要品种的回购交易。

— Where is your mother, Jim?

— She _____ the flowers in the garden.  [ ]

A. waters

B. is watering

C. watered

D. was watered

在以下四个WWW网址中，______网址不符合WWW网址书写规则。

A．ww163.com

B．wwncedu

C．ww863.orcn

D．wwtnejp

构成人体下列器官的主要组织是肌肉组织的是                                                    

A．唾液腺

B．心脏

C．大脑

D．股骨

一老年人膝关节手术选用布比卡因脊麻，其剂量应该为（）

A.4～5mg

B.7～8mg

C.10～12mg

D.12～15mg

E.15～20mg

The software architecture of a program or computing system is the structure or structures of the system, which comprise software______, the externally ______ properties of those components, and the relationships between them. The architecture is not the operational software. Rather, it is a ______ that enables a so, ware engineer to: analyze the ______ of the design in meeting its stated requirements, consider architectural alternatives at a stage when making design changes is still relatively easy, and reduce the ______ associated with the construction of the software.

A．pattern
B．models
C．metadata
D．components