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【单选题】
It can be inferred from the first paragraph that Zero Day
A.
is part of Microsoft's Windows operating system.
B.
can help a computer to avoid online criminals.
C.
is offered by legitimate Web sites.
D.
can control a computer through its system weakness.
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】已知程序如下,若X=10, Y=50, Z=30该程序执行完成后,X的值为_____。 X = Z + Y; If Y X = X – Y; } Else{ X= X – Z; } X = X – Y; If X X = X – Z; If X > Y { X = X – Y; }
A.
40
B.
20
C.
10
D.
30
【单选题】已知程序如下,若X=10, Y=50, Z=30该程序执行完成后,X的值为_____。 X = Z + Y; If Y X = X – Y; } Else{ X= X – Z; } X = X – Y; If X X = X – Z; If X > Y { X = X – Y; }
A.
10
B.
20
C.
40
D.
30
【单选题】已知程序如下,若 X=10, Y=50, Z=30 该程序执行完成后, X 的值为 _____ 。 X = Z + Y ; If Y Y { X = X – Y ; }
A.
10
B.
20
C.
30
D.
40