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问题 选择题

The two girls are so alike that strangers find_____ difficult to tell one from the other.

A．it

B．them

C．her

D．that

答案

答案：A

考察代词。it做形式宾语真正宾语是后面to不定式。

单项选择题

下述哪项不是大量心包积液的X线表现()

A．心弓切迹消失

B．心搏动减弱

C．心尖搏动位于心影内

D．上腔静脉增宽

E．肺淤血
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单项选择题

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 software 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. changeability B. effectiveness C. testability D. functionality
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