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【单选题】
Which statement is wrong about the use case approach?
A.
Use cases specify the functionality of the system.
B.
Use cases can be used for different basic activities in the requirements phase.
C.
Each use case consists of many normal scenarios and many exceptional scenarios.
D.
Use case occurs when a user interacts with the system for achieving some goal.
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A.
Y
B.
N
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NG
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A.
has increased
B.
have increased
C.
are increased
D.
was increased
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A.
since almost a year
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from almost a year on
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after almost a year
D.
since almost a year ago
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A.
has risen
B.
have risen
C.
rises
D.
rise
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