The word "it" in the first line of the second paragraph refers to ______. A.software B.r
The word "it" in the first line of the second paragraph refers to ______.
A.software B.reliability
C.safety D.challenge
The word "it" in the first line of the second paragraph refers to ______.
A.software B.reliability
C.safety D.challenge
A.the change
B.the bill
C. the note
D.the order
A.by example
B.by process
C.by comparison
D.by contrast
A.software is pervasive
B.software controls subways and power plants
C.automated teller machines are very convenient
D.mechanically-controlled items are not reliable
A.read-write heads B.access arms
C.sectors D.a laser
A.rotational delay B.access time
C.run time D.seek time
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