题干

以前,人们往往认为一切生物的生长都依赖阳光。现在科学家发现,在水深超过6000米的可见光不能到达的海底,在高温、高压、剧毒、缺氧的环境里,仍然存在大量海底热液生物,它们靠海底热液带出的能量进行化合作用合成有机质而生存。这从一个侧面表明(    )

①对真理的追求是永无止境的循环过程

②真理是理论与实践的具体的历史的统一

③客观事物的复杂性决定了认识的反复性

④认识只有不断超越历史条件才能成为真理

A:①②

B:①④

C:②③

D:③④

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答案(点此获取答案解析)

C

同类题4

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 Sources (来源) of health Information

    Making good choices about your own health requires reasonable evaluation. A key first step in bettering your evaluation ability is to look carefully at your sources of healthy information. Reasonable evaluation includes knowing where and how to find relevant information, how to separate fact from opinions, how to recognize poor reasoning, and how to analyze information and the reliability of sources. ____

    Go to the original source. Media reports often simplify the results of medical research. Find out for yourself what a study really reported, and determine whether it was based on good science. Think about the type of study. ____

    Watch for misleading language. Some studies will find that a behavior "contributes to" or is "associated with" an outcome; this does not mean that a certain course must lead to a certain result. ____ Carefully read or listen to information in order to fully understand it.

    Use your common sense. If a report seems too good to be true, probably it is. Be especially 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 great source of ideas and inspiration, but each of us needs to find a healthy lifestyle that works for us.

    Developing the ability to evaluate reasonably and independently about the health problems will serve you well throughout your life.

A. Make choices that are right for you.

B. The goal of an ad is to sell you something.

C. Be sure to work through the critical questions.

D. And examine the findings of the original research.

E. Distinguish between research reports and public health advice.

F. Be aware that information may also be incorrectly explained by an author's point of view.

G. The following suggestions can help you sort through the health information you receive from common sources.