35．Applications put computers to pratical

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．addition

B．combination

C．difference

D．condition

答案

参考答案：B

解析：
译文的含义是：使用MP3，600MB的音乐CD可以((1))为50MB或更小。它可以流式传输(分块下载)，使人们可以边在后台下载((2))，边听音乐。此外，更重要的是，在((4))缺少压缩方案时，MP3音乐文件还可以保持良好的音乐((3))。这些特征((5))起来，使得在Web上第一时间访问和分发音乐更为实际。