题干

已知l表示一条直线,αβ表示两个不重合的平面,有以下三个语句:①lα;②lβ;③αβ.以其中任意两个作为条件,另外一个作为结论,可以得到三个命题,其中正确命题的个数是(  )

A:0

B:1

C:2

D:3

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答案(点此获取答案解析)

B

同类题2

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Evaluating (评价)Sources of health Information

Makinggood choices about your own health requires reasonable evaluation. A key firststep in bettering your evaluation ability is to look carefully at your sourcesof healthy information. Reasonable evaluation includes knowing where and how tofins relevant information, how to separate fact from opinions, how to recognizepoor reasoning, and how to analyze information and the reliability of sources.____ 

Goto the original source. Media reports often simplify the results of medicalresearch. Find out for yourself what a study really reported, and determinewhether it was based on good science. Think about the type of study.____

Watchfor misleading language. Some studies will find that a behavior “contributesto” or is “associated with” an outcome; this does not mean that a certaincourse must lead to a certain result.____ Carefully read or listen toinformation in order to fully understand it.

Useyour common sense. If a report seems too good to be true, probably it is. Beespecially careful of information contained in advertisements.____ Evaluate “scientific” statements carefully,and be aware of quackery(江湖骗术).____ Friends and family members can be a greatsource of ideas and inspiration, but each of us needs to find a healthylifestyle that works for us.

Developingthe ability to evaluate reasonably and independently about the health problemswill serve you well throughout your life.

A.The goal of an ad is to sell yousomething.

B.Make choices that are right for you.

C.And examine the findings of theoriginal research.

D.Be sure to work through the criticalquestions.

E.Distinguish between research reportsand public health advice.

F.The following suggestions can help yousort through the health information you receive from common sources.

G.Be aware that information may also beincorrectly explained by an author's point of view.

同类题4

阅读下面的文字,完成文后小题。

    作为中国南方高原上人口分布最广、历史文化最深厚的古老民族之一,彝族有着丰富的祭祀和礼仪文化体系。其中有一项古老而神秘的祭祀表演,就是首批国家非物质文化遗产项目、被称作中国戏剧活化石的彝族古戏“撮泰吉”。

    “撮泰吉”系彝语音译,“撮”意是“人”,“泰”意为“变化”,“吉”意为“游戏、玩耍”,连起来讲就是“人类演变的戏”,简称“变人戏”。每年阴历正月初三到十五是“撮泰吉”演出的时段,演出目的旨在扫除人畜祸患,祈求风调雨顺、五谷丰登。每逢演出期间,活动多集中在夜晚,地点则以本村寨为主,有时也会受邀到附近的村寨演出。如今“撮泰吉”演出在大多数地方已经失传,唯有威宁的裸戛村还保留得相对完整。

    学界一般认为,“撮泰吉”属于古傩戏的一种。傩戏是多种宗教文化混合的产物,透过弥漫着宗教色彩的戏剧窗口,我们可以窥视到多民族不同历史阶段的文化风貌、古风民俗。然而,“撮泰吉”的传承在当下仍面临着诸多问题。首先是表演者的后继乏力。“撮泰吉”的传承秉持着传内不传外、传男不传女的原则,但相比从事傩戏表演,现在的许多年轻人宁愿选择经济效益更显著的外出务工,长此以往,势必发生传承者的断层。其次是投入上的紧缺。据威宁县非遗办相关工作人员介绍,财政投入过少,保护意识淡薄,文化理念落后,常常导致“撮泰吉”的保护丧失动力。再者,专业人才的匮乏和研究队伍的不稳定也不利于“撮泰吉”的健康发展。

    事实上,“撮泰吉”作为国家级非物质文化遗产,本来就天然具有一定的经济价值或资本价值。因此对“撮泰吉”的保护并不是作博物馆标本式的封存,而是以活态的形式,不断注入新鲜血液以融入时代的发展之中。管理部门应当明确自身职责,在加大监管和投入力度的同时,也要形成强烈的宣传意识和有效的运作机制。社会方面应积极寻找“撮泰吉”与当代文化的合作开发路径,譬如舞台展示的改进、依附于民族节日进行外向式开发以及和旅游产业的融合等等。这些举措对于“撮泰吉”的生存和生长都将是关键而必要的。

    不过值得注意的是,相比于“撮泰吉”的保护,其研究工作却更须谨慎而行。“撮泰吉”虽然存活于崇山峻岭之中,长期与世隔绝,很晚才揭开其神秘面纱,但如今在多方的关注下,仍不可避免地发生着变异。研究者在田野考察中尤须谨慎“辨伪”,仔细甄别传统沿袭的原生态“撮泰吉”和经过讹误扭曲的部分,并在此基础上做好“撮泰吉”的传承工作,避免学术研究中出现的偏离客观认识的“泛傩现象”。唯有立足本土和本民族进行研究,防止从案头到案头的泛泛之谈,才能真正澄清发生在“撮泰吉”认识上的种种误区,阐明其在非物质文化遗产和戏剧发生学上的重要意义。

                                 (摘编自《光明日报》,2015年10月28日10版)