培育过程中不断调节混交林中种间关系的主要方法。

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问题:

培育过程中不断调节混交林中种间关系的主要方法。

考点:森林培育学森林培育学题库
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Many theories concerning the causes of juvenile delinquency (crimes committed by young people) focus either on the individual or on society as the major contributing influence. Theories (51) on the individual suggest that children engage in criminal behavior (52) they were not sufficiently penalized for previous misdeeds or that they have learned criminal behavior through (53) with others. Theories focusing on the role of society suggest that children commit crimes in response to their failure to rise above their socioeconomic status, (54) as a rejection of middle-class values. Most theories of juvenile delinquency have focused on children from disadvantaged families, ignoring the fact that children from wealthy homes also commit crimes. The latter may commit crimes (55) lack of adequate parental control. All theories, however, are tentative and are (56) to criticism. Changes in the social structure may indirectly (57) juvenile crime rates. For example, changes in the economy that lead to fewer job opportunities for youth and rising unemployment (58) make gainful employment increasingly difficult to obtain. The resulting discontent may in turn lead more youths into criminal behavior. Families have also (59) changes these years. More families consist of one-parent households or two working parents; consequently, children are likely to have less supervision at home (60) was common in the traditional family structure. This lack of parental supervision is thought to be an influence on juvenile crime rates.

57().

A.affect 

B.reduce 

C.check 

D.reflect

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阅读下面的文言文,完成下面问题。
  田叔者,赵陉城人也。其先,齐田氏也。叔好剑,学黄老术于乐钜公。为人廉直,喜任侠。游诸公,赵人举之赵相赵午。言之赵王张敖,以为郎中。数岁,赵王贤之,未及迁。
  会赵午、贯高等谋弑上,事发觉,汉下诏捕赵王及群臣反者。赵有敢随王,罪三族。唯田叔、孟舒等十余人赭衣自髡钳,随王至长安。赵王敖事白,得出,废王为宣平侯,乃进言叔。上召见,与语,汉延臣无能出其右者。上说,拜叔.为汉中守。
  孝文帝初立,召叔问曰:“公知天下长者乎?”对曰:“臣何足以知之!”上曰:“公长者,宜知之。”叔顿首曰:“故云中守孟舒,长者也。”是时盂舒坐虏大入云中免。上曰:“先帝置孟舒云中十余年矣,虏常一入,孟舒不能坚守,无故士卒战死者数百人。长者固杀人乎?”叔叩头曰:“夫贯高等谋反,天子下明诏,赵有敢随张王者罪三族,然孟舒自髡钳,随张王,以身死之,岂自知为云中守哉!汉与楚相距,士卒罢敝,而匈奴冒顿新服北夷,来为边寇,孟舒知士卒罢敝,不忍出言,士争临城死敌,如子为父,以故死者数百人,孟舒岂驱之哉!是乃孟舒所以为长者。”于是上曰:“贤哉孟舒!”复召以为云中守。
  后数岁,叔坐法失官。梁孝王使人杀汉议臣爰盎,景帝召叔案梁,具得其事。还报,上曰:“梁有之乎?”对曰:“有之。”“事安在?”叔曰:“上无以梁事为问也。今梁王不伏诛,是废汉法也;如其伏诛,太后食不甘味,卧不安席。此忧在陛下。”于是上大贤之,以为鲁相。
  相初至官,民以王取其财物自言者百余人。叔取其渠率二人笞,怒之曰:“王非汝主邪?何敢自言主!”鲁王闻之,大惭,发中府钱,使相偿之。相曰:“王自使人偿之,不尔,是王为恶而相为善也。”
  鲁王好猎,相常从入苑中,王辄休相就馆。相常暴坐苑外,终不休,曰:“吾王暴露,独何为舍?”王以故不大出游。数年以官卒。(节选自《汉书·田叔传》,有删改)
1.对下列句子中划线的词的解释,不正确的一项是
[ ]
A.赵王敖事,得出——白:澄清
B.景帝召叔梁,具得其事——案:记录
C.叔取其率二人笞——渠:大
D.中府钱,使相偿之——发:拿出
2.以下句子中,全都能表明田叔贤能的一组是
[ ]
①言之赵王张敖,以为郎中②赭衣自髡钳,随王至长安③与语,汉廷臣无能出其右者
④士争临城死敌,如子为父⑤上无以梁事为问也⑥吾王暴露,独何为舍
A.①②⑤
B.②③④
C.③④⑥
D.②⑤⑥
3.下列对原文有关内容的分析和概括,正确的一项是
[ ]
A.田叔好剑,为人清廉正直,喜欢抑强扶弱,被举荐给赵国国相赵午和赵王张敖,赵王认为他是贤士,就让他做了郎中。
B.田叔有节操,忠心讲义气,赵王张敖因谋反被捕时,田叔依然甘做囚奴跟随赵王到长安请罪,最后被任命为汉中太守。
C.田叔有长者风范,孝文帝向他打听天下的长者,他推举被认为无能且伤亡士卒而被免职的孟舒,最终孟舒因此官复原职。
D.文章语言精炼,叙事简洁,采用语言描写、行为描写和欲扬先抑等手法,使人物形象鲜明生动,具有较强的艺术力量。
4.把文中画横线的句子翻译成现代汉语。
(1)然孟舒自髡钳,随张王,以身死之,岂自知为云中守哉!
 _______________________________________________
(2)今梁王不伏诛,是废汉法也;如其伏诛,太后食不甘味,卧不安席。
 _______________________________________________
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A.2

B.3

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