可退式抽油杆打捞筒是靠（）抓住落井抽油杆的。A、卡瓦造扣 B、锥面内缩产生的夹紧力

下图为吉林省东部山区P村庄在某时刻等压面示意图，读图回答下面两题。

小题1:2008年12月15日，人们在清晨发现整个小村弥漫在浓密的烟尘之中，下列关于这种现象成因的说法正确的是

A．冬季燃煤取暖释放的烟尘较多

B．村民做早饭释放大量烟尘

C．谷地地形易形成地形逆温现象，烟尘不易扩散

D．此时盛行山风，山坡易形成地形雨，多云雾小题2:关于图中时刻的叙述正确的是

①图中等压面一般出现在夜晚  ②图中等压面一般出现白天

③此时吹山风     ④此时吹谷风

A．①③

B．①④

C．②③

D．②④

The works of Shakespeare and Wordsworth are “rocket-boosters” to the brain and better therapy than self-help books, researchers will say this week.

Scientists, psychologists and English academics at Liverpool University have found that reading the works of the Bard and other classical writers has a beneficial effect on the mind, catches the reader’s attention and cause moments of self-reflection.

Using scanners, they monitored the brain activity of volunteers as they read works by William Shakespeare, William Wordsworth, T.S Eliot and others.

They then “translated” the texts into more “straightforward”, modern language and again monitored the readers’ brains as they read the words.

Scans showed that the more “challenging” prose （散文）and poetry set off far more electrical activity in the brain than the more pedestrian versions.

Scientists were able to study the brain activity as it responded to each word and record how it “lit up” as the readers encountered unusual words, surprising phrases or difficult sentence structure.

This “lighting up” of the mind lasts longer than the initial electrical spark, shifting the brain to a higher gear, encouraging further reading.

The research also found that reading poetry, in particular, increases activity in the right hemisphere （半球）of the brain, an area concerned with “autobiographical memory”, helping the reader to reflect on and reappraise their own experiences in light of what they have read. The academics said this meant the classics were more useful than self-help books.

Philip Davis, an English professor who has worked on the study with the university’s magnetic resonance centre, will tell a conference this week: “Serious literature acts like a rocket-booster to the brain.

"The research shows the power of literature to shift mental pathways, to create new thoughts, shapes and connections in the young and the elderly alike.”

小题1:How do classics such as Shakespeare and Wordsworth benefit the readers?

A．They set off far less electrical activity in the brain.

B．They light up the mind shorter than the initial electrical spark.

C．They shift physical pathways in the young and the elderly.

D．They draw readers’ attention and help make self-examination.小题2:Why does the author mention” They then” translated”… modern language“？

A．To prove that classics are more useful than ordinary versions.

B．To show self-help books act like rocket-boosters to the brain.

C．To tell serious literature sets off far less electrical activity.

D．To make known ordinary versions set off more electrical activity小题3:What can we conclude according to the researchers?

A．Self-help books are more valuable than classics.

B．Serious literature lights up the mind shorter than ordinary versions.

C．The right hemisphere of the brain is related to autobiographical memory.

D．Literature has a beneficial effect only on the mind of the young.小题4:Which of the following would be the best title for the passage?

A．Ordinary Versions Create New Thoughts

B．Modern Language Increases the Brain

C．Classics Help lmprove the Brain Activity

D．Self-help Books, Rocket-boosters

在窗体上画一个名称为CommonDialog1的通用对话框，一个名称为Command1的命令按钮，要求单击命令按钮时，打开一个保存文件的对话框，该窗口的标题为“Save”，缺省文件名称为“SaveFile”，在“文件类型”栏中显示*txt，则能够满足上述要求的程序是（ ）。

A． java

B． javac

C． javap

D． javadoc

甲、乙为战友。一日，甲交给乙一个提包，要乙为其保管。乙再三追问才得知是甲贩毒所购买的海洛因。乙不敢收下，但经不住甲的再三请求，只得同意。乙的行为构成

A．窝藏罪

B．包庇毒品犯罪分子罪

C．窝藏毒品罪

D．非法持有毒品罪

边际消费倾向和平均消费倾向都总是大于零而小于1。（）