问题 单项选择题

35.Applications put computers to pratical business (1) , but below the (2) it’s the heart of an operating system—the kernel that provides the technical wizardry to juggle multiple program, connect to networks and store (3) . A traditional kernal provides all the functions for applications. The kemal (4) memory, I/O devices and parcels out processor time.
The kernel also supports security and fault (5) , which is the ablity to recover automatically when parts of the system fail.

(5)

A.like

B.likely

C.unlike

D.unlikely

答案

参考答案:B

解析:
译文的含义是:软件设计是((1))的过程。它需要设计者具有((2))鉴别能力。设计不能仅仅来源于书本。它必须考虑到人们的经验和教训,并对现有系统进行研究。((3))良好的软件系统其实现与维护都简单直接,易于((4)),而且具有可靠性。设计拙劣的软件系统,尽管其可以工作,但((5))维护昂贵,难于测试,而且不可靠。

单项选择题
单项选择题