题干

下列实验操作正确的是(  )

A:用托盘天平称取5.5gKCl固体

B:在酸碱中和滴定实验中,量取20.00mL待测NaOH溶液用20mL量筒

C:将干燥的pH试纸浸入某溶液一会儿后取出,与标准比色卡比较以测定该溶液的pH

D:配制0.1mol•L﹣1的硫酸溶液时,将量取的浓硫酸放入容量瓶中加水稀释

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答案(点此获取答案解析)

A

同类题3

阅读下面的文字,完成下列各题。

    很多人说:什么是意境?意境就是“情”“景”交融。其实这种解释应该是从近代开始的。王国维在《人间词话》中所使用 的“意境”或“境界”,他的解释就是情景交融。但是在中国传统美学中,情景交融所规定的是“意象”,而不是“意境”。中国传统美学认为艺术的本体就是意象,任何艺术作品都要创造意象,都应该情景交融,而意境则不是任何艺术作品都具有的。意境除了有意象的一般规定性之外,还有自己的特殊规定性,意境的内涵大于意象,意境的外延小于意象。那么意境的特殊规定性是什么呢?唐代刘禹锡有句话:“境生于象外。”“境”是对于在时间和空间上有限的“象”的突破,只有这种象外之“境”才能体现作为宇宙的本体和生命的“道”。

    从审美活动的角度看,所谓“意境”,就是超越具体的有限的物象、事件、场景,进入无限的时间和空间,从而对整个人生、历史、宇宙获得一种哲理性的感受和领悟。西方古代艺术家,他们给自己提出的任务是要再现一个具体的物象,所以他们,比如古希腊雕塑家追求“美”,就把人体刻画得非常逼真、非常完美。而中国艺术家不是局限于刻画单个的人体或物体,把这个有限的对象刻画得很逼真、很完美。相反,他们追求一种“象外之象”、“景外之景”。中国园林艺术在审美上的最大特点也是有意境。中国古典园林中的楼、台、亭、阁,它们的审美价值主要不在于这些建筑本身,而是如同王羲之《兰亭集序》所说,在于可使人“仰观宇宙之大,俯察品类之盛”。

    我们生活的世界是一个有意味的世界。陶渊明有两句诗说得好:“此中有真意,欲辨已忘言。”艺术就是要去寻找、发现、体验生活中的这种意味。有意境的作品和一般的艺术作品在这一点的区别,就在于它不仅揭示了生活中某一个具体事物或具体事件的意味,而且超越了具体的事物和事件,从一个角度揭示了整个人生的意味。所以,不是任何艺术作品都有意境,也不是任何好的艺术作品都有深远的意境。清代王夫之就比较过杜甫的诗和王维的诗。他认为杜甫诗的特点是“即物深致,无细不章”,有人写诗就是怕写不逼真,杜甫则太逼真了。而王维诗则能取之象外,所以他说杜甫是“工”,王维是“妙”。

    中国艺术的这种意境,它给人的美感,实际上包含了一种人生感、历史感。康德曾经说过,有一种美的东西,人们接触到它的时候,往往感到一种惆怅。意境就是如此,这是一种最高的美感。当然这不等于说西方艺术没有意境,西方艺术中也有这样的作品,例如俄罗斯民歌《伏尔加船夫曲》,它不仅唱出了俄罗斯民族的苦难,而且唱出了人类共同的苦难,所以它引起了全世界听众的共鸣。

(摘编自叶朗《说意镜》)

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。

    Many people think of guys as being carefree when it comes to their appearance. But in fact, a lot of guys spend plenty of time in front of the mirror. ____.

    Body image is a person's opinions and feelings about his or her own body and physical appearance. ____. You appreciate your body for its capabilities and accept its imperfections.

    So, what can you do to develop a positive body image? Here are some ideas:

    Recognize your strengths. Different body types are good for different things. What does your body do well? Maybe your speed, strength, or coordination makes you better than others at a certain sport. That may be basketball, table tennis, mountain biking, dancing, or even running. Or perhaps you have non-sports skills, like drawing, painting, singing, playing a musical instrument, writing, or acting. ____.

    Exercise regularly. Exercise can help you look good and feel good about yourself. Good physiques (体形) don't just happen. ____. A healthy habit can be as simple as exercising 20 minutes to one hour three days a week. Working out can also lift your spirits.

    Respect your body. Practicing good habits — regular showering; taking care of your teeth, hair, and skin; wearing clean clothes, and so on — can help you build a positive body image.

    ____. Your body is just one part of who you are. Your talent for comedy, a quick wit (智慧), and all the other things make you unique. So try not to let small imperfections take over.

A. Be yourself.

B. Just explore talents that you feel good about.

C. Use this as an opportunity to discover what you're good at.

D. They care just as much as girls do about their body image.

E. They take hard work, regular workouts, and a healthy diet.

F. The good news is that self-image and body image can be changed.

G. Having a positive body image means feeling satisfied with the way you look.