【正文】 brain at nervetonerve synapses. To understand how acetylcholine brings about a variety of effects in different cells it is necessary to understand membrane receptors. In postsynaptic membranes (those of the cells on which the nerve fibres terminate) there are many different sorts of receptors and some are receptors for acetylcholine. These are protein molecules that react specifically with acetylcholine in a reversible fashion. It is the plex of receptor bined with acetylcholine which brings about a biophysical reaction, resulting in the response from the receptive cell. Two major types of acetylcholine receptors exist in the membranes of cells. The type in skeletal muscle is known as ‘nicotinic’。 見(jiàn)《大學(xué)語(yǔ)文》 P3233 《與山巨源絕交書(shū)》一文中嵇康與山巨源“絕交”的原因。 見(jiàn)《大學(xué)語(yǔ)文》 P159 四、分析題 試析魯迅《春末閑談》的現(xiàn)實(shí)針對(duì)性。s first oneman show in 1948 established him as a highly influential artist. His intensely plicated abstract paintings of the 1940s were followed by images of Woman, grotesque versions of buxom womanhood, which were virtually unparalleled in the sustained savagery of their execution. Painters such as Philip Guston and Franz Kline turned to the abstract late in the 1940s and soon developed strikingly original styles— the former, lyrical and evocative, the latter, forceful and boldly dramatic. Other important artists involved with the movement included Hans Hofmann, Robert Motherwell, and Mark Rothko。 a circle is circumscribed about a polygon if all the vertices of the polygon lie on the circumference. The length of the circumference C of a circle is equal to π (see pi) times twice the radius distance r, or C=2πr. The area A bounded by a circle is given by A=πr2. Greek geometry left many unsolved problems about circles, including the problem of squaring the circle, ., constructing a square with an area equal to that of a given circle, using only a straight edge and pass。s disease. abstract expressionism, movement of abstract painting that emerged in New York City during the mid1940s and attained singular prominence in American art in the following decade。 見(jiàn)《大學(xué)語(yǔ)文》 P108 五、分析題 “童心論”的目的和意義。 見(jiàn)《大學(xué)語(yǔ)文》 P88— 89 《湖心亭看雪》是如何把寫(xiě)景、記事與抒情融為一體的？ 見(jiàn)《大學(xué)語(yǔ)文》 P103— 104 作業(yè) 3 一、填空題 “革命文學(xué)” “中國(guó)左翼作家聯(lián)盟” 《之夜》，《家》，《駱駝祥子》 現(xiàn)代話(huà)劇成熟 《生死場(chǎng)》 “新感覺(jué)派” “中華全國(guó)文藝界抗敵協(xié)會(huì) 《華威先生》，《在其香居茶館 里》 路翎 艾青 1文藝為工農(nóng)兵服務(wù) 1趙樹(shù)理 1《圍城》 1《飲冰室合集》 1《朝花夕拾》 1《駱駝祥子》，“市民詩(shī)人” 二、名詞解釋 “文學(xué)研究會(huì)” 見(jiàn)《大學(xué)語(yǔ)文》 P122 “新月派” 見(jiàn)《大學(xué)語(yǔ)文》 P122— 123 “中國(guó)左翼作家聯(lián)盟” 見(jiàn)《大學(xué)語(yǔ)文》 P123 “京派“ 見(jiàn)《大學(xué)語(yǔ)文》 P123 三、簡(jiǎn)答題 簡(jiǎn)述周作人小品文《蒼蠅》的內(nèi)容。 also called action painting and the New York school. It was the first important school in American painting to declare its independence from European styles and to influence the development of art abroad. Arshile Gorky first gave impetus to the movement. His paintings, derived at first from the art of Picasso, Mir243。 it was finally proved impossible in the late 19th cent. (see geometric problems of antiquity). In modern mathematics the circle is the basis for such theories as inversive geometry and certain nonEuclidean geometries. The circle figures si