已知x2-5∣x+1∣+2x-5=0,则x的所有取值的和为
A.2
B.-2
C.0
D.1
E.-1

某网络公司通过问卷对登录“心理医生之窗”网站寻求心理帮助的人群进行调查。结果显示:持续登录“心理医生之窗”网站6个月或更长时间的人群中,46%声称与“心理医生之窗”网站的沟通与交流使他们心情变得好多了。因此,更长时间登录“心理医生之窗”网站比短期登录会更有效改善人们的心理状态。以下哪项如果为真,最能削弱上述论断?
A.持续登录该网站6个月以上的人群中,10%的人反映登录后心情变得更糟了。
B.持续登录该网站6个月以上的人比短期登录的人更愿意回答问卷调查的问题。
C.对“心理医生之窗”网站不满意的人往往是那些没有耐心的人,他们对问卷调查往往持消极态度。
D.登录网站获得良好心情的人会更积极地登录,而那些感觉没有效果的人往往会离开。
E.登录“心理医生之窗”网站不足半年的人多于登录该网站6个月以上的人。

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.
The author's attitude toward reversing the highspeed trend is_____
A.tolerant
B.uncertain
C.optimistic
D.doubtful

I couldn't stop crying.Months oflate evenings and demanding travel had l my professional exterior.I tried to 2 my quarterly numbers while my colleagues squirmed（局促不安）in their seats,offered me a box oftissues,or just 3.My boss 4 ended the meeting.My colleagues quickly 5 the room.l was left 6 in the conference room,crumpled tissues in hand.For women,crying in a professional 7 is often seen as the kiss of death:"Stop crying!Someone will see you.""Quick,run to the ladies'room!"These are just two 8 0f similar wamings I've heard throughout my career.But it's not just me.Female friends and colleagues have told me they too have been told to 9 the waterworks.It's a familiar 10 for women who cry at work:Escape to bathroom.Grab toilet paper.Wipe eyes.Blow nose.Take deep breath and sashay back into the conference rooms,banquet halls,auditoriums and hallways.Act as ifwe really did just have to use the 11.If,however,we can't make a pre-tears escape,we're likely to 12 0ur tails between our legs:"I'm so sorry.""Don't worry,that will never happen again.""You're right,that was so unprofessional."Most of the women I spoke with about this 13 explain that to cry in front of colleagues,especially male peers or bosses,14 as one ofthe most humiliating professional experiences.But times and corporate culture are both changing.Could crying have a less negative feeling ifleaders 15 it as natural?16 gender,leaders need to be trained on how t0 17 crying as another form of emotional expression.The 18 from the top needs to be that no one will lose credibility or be seen as less competent if they cry.Rather,they will be viewed as being 19 while helping to create an even more 20 workplace culture.4选？
A.politely
B.naturally
C.abruptly
D.angrily

一个无穷等比数列所有奇数项之和为45,所有偶数项之和为-30,则其首项等于（）
A.24
B.25
C.26
D.27
E.28

一个产品要畅销,产品的质量和经销商的诚信缺一不可。以下各项都符合题干的断定,除了?
A.一个产品滞销,说明它或者质量不好,或者经销商块乏诚信
B.一个产品,只有质量高并且由诚信者经销,才能畅销
C.一个产品畅销,说明它质量高并有诚信的高
D.一个产品,除非有高的质量和诚信的经销商,否则不能畅销
E.一个质量好并且由诚信者经销的产品不一定畅销