[单选题]In a world where it seems we already have too much to do,and too many things to think about,it seems the last thing we need is something new that we have to learn.But use cases do solve a problem with requirements:with__1__declarative requirements it's hard to describe steps and sequences of events.Use cases,stated simply,allow description of sequences of events that,taken together,lead to a system doing something useful.As simple as this sounds,this is important.When confronted only with a pile of requirements,it's often__2__to make sense of what the authors of the requirements really wanted the system to do.In the preceding example,use cases reduce the ambiguity of the requirements by specifying exactly when and under what conditions certain behavior occurs;as such,the sequence of the behaviors can be regarded as a requirement.Use cases are particularly well suited to capturing these kind of requirements.Although this may sound simple,the fact is that__3__requirement capture approaches,with their emphasis on declarative requirements and"shall"statements,completely fail to capture the__4__of the system's behavior.Use cases are a simple yet powerful way to express the behavior of the system in way that all stakeholders can easily understand.But,like anything,use cases come with their own problems,and as useful as they are,they can be__5__.The result is something that is as bad,if not worse,than the original problem.Therein it's important to utilize use cases effectively without creating a greater problem than the one you started with. 3、____
A.modem
B.conventional
C.different
D.formal

[单选题]In a world where it seems we already have too much to do,and too many things to think about,it seems the last thing we need is something new that we have to learn.But use cases do solve a problem with requirements:with__1__declarative requirements it's hard to describe steps and sequences of events.Use cases,stated simply,allow description of sequences of events that,taken together,lead to a system doing something useful.As simple as this sounds,this is important.When confronted only with a pile of requirements,it's often__2__to make sense of what the authors of the requirements really wanted the system to do.In the preceding example,use cases reduce the ambiguity of the requirements by specifying exactly when and under what conditions certain behavior occurs;as such,the sequence of the behaviors can be regarded as a requirement.Use cases are particularly well suited to capturing these kind of requirements.Although this may sound simple,the fact is that__3__requirement capture approaches,with their emphasis on declarative requirements and"shall"statements,completely fail to capture the__4__of the system's behavior.Use cases are a simple yet powerful way to express the behavior of the system in way that all stakeholders can easily understand.But,like anything,use cases come with their own problems,and as useful as they are,they can be__5__.The result is something that is as bad,if not worse,than the original problem.Therein it's important to utilize use cases effectively without creating a greater problem than the one you started with. 2、_____
A.impossible
B.possible
C.sensible
D.practical

[单选题]In a world where it seems we already have too much to do, and too many things to think about, it seems the last thing we need is something new that we have to learn. But use cases do solve a problem with requirements:with （71） declarative requirements it's hard to describe steps and sequences of events. Use cases, stated simply, allow description of sequences of events that, taken together, lead to a system doing something useful.As simple as this sounds,this is important. When confronted only with a pile of requiements, it's often（72）to make sense of what the authors of the requirements really wanted the system to do.In the preceding example, use cases reduce the ambiguity of the requirements by specifying exactly when and under what conditions certain behavior occurs;as such, the sequence of the behaviors can be regarded as a requirement. Use cases are particularly well suited to capture approaches. Although this may sound simple, the fact is that （73） requirement capture approaches, with their emphasis on declarative requirements and "shall" statements,completely fail to capture fail to capture the （74） of the system's behavior. Use cases are a simple yet powerful way to express the behavior of the system in way that all stakeholders can easily understand. But,like anything, use cases come with their own problems, and as useful as they are,they can be （75）. The result is something that is as bad, if not worse, that the original problem.Therein it's important to utilize use cases effectively without creating a greater problem than the one you started with.
A.misapplied
B.applied
C.used
D.powerful

[单选题]__we have finished the text,we shall start doing more revision exercises．
A.For now
B.Since that
C.Now that
D.By now

[单选题]We_ _ have proved great adventurers, but we have done the greatest march ever made inthe past ten years.
A.needn' t
B.may not
C.shouldn' t
D.mustn' t

[单选题]If we__sooner,we might have got there.
A.started
B.had started
C.would have started
D.start

[单选题]We are using up our natural resources too quickly and at the same time we are__our environment with dangerous chemicals.
A.protecting
B.saving
C.polluting
D.fighting

[单选题]Text 3 Scientists have found that although we are prone to snap overreactions,if we take a moment and think about how we are likely to react,we can reduce or even eliminate the negative effects of our quick,hardwired responses.Snap decisions can be important defense mechanisms;if we are judging whether someone is dangerous,our brains and bodies are hardwired to react very quickly,within milliseconds.But we need more time to assess other factors.To accurately tell whether someone is sociable,studies show,we need at least a minute,preferably five.It takes a while to judge complex aspects of personality,like neuroticism or openmindedness.But snap decisions in reaction to rapid stimuli aren't exclusive to the interpersonal realm.Psychologists at the University of Toronto found that viewing a fastfood logo for just a few milliseconds primes us to read 20 percent faster,even though reading has little to do with eating.We unconsciously associate fast food with speed and impatience and carry those impulses into whatever else we're doing.Subjects exposed to fastfood flashes also tend to think a musical piece lasts too long.Yet we can reverse such influences.If we know we will overreact to consumer products or housing options when we see a happy face（one reason good sales representatives and real estate agents are always smiling）,we can take a moment before buying.If we know female job screeners are more likely to reject attractive female applicants,we can help screeners understand their biases—or hire outside screeners.John Gottman,the marriage expert,explains that we quickly“thin slice”information reliably only after we ground such snap reactions in“thick sliced”longterm study.When Dr.Gottman really wants to assess whether a couple will stay together,he invites them to his island retreat for a much longer evaluation;two days,not two seconds.Our ability to mute our hardwired reactions by pausing is what differentiates us from animals:doges can think about the future only intermittently or for a few minutes.But historically we have spent about 12 percent of our days contemplating the longer term.Although technology might change the way we react,it hasn't changed our nature.We still have the imaginative capacity to rise above temptation and reverse the highspeed trend. Our reaction to a fastfood logo shows that snap decisions_____
A.can be associative
B.are not unconscious
C.can be dangerous
D.are not impulsive