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Descartes in 1637 and was of fundamental importance in the development of the calculus by Sir Isaac Newton and G. W. Leibniz in the late 17th cent. More recently it has served as the basis for the modern development and exploitation of algebraic geometry. circle, closed plane curve consisting of all points at a given distance from some fixed point, called the center. A circle is a conic section cut by a plane perpendicular to the axis of the cone. The term circle is also used to refer to the region enclosed by the curve, more properly called a circular region. The radius of a circle is any line segment connecting the center and a point on the curve。 among other major abstract expressionists were such painters as Clyfford Still, Theodoros Stamos, Adolph Gottlieb, Helen Frankenthaler, Lee Krasner, and Esteban Vicente. Abstract expressionism presented a broad range of stylistic diversity within its largely, though not exclusively, nonrepresentational framework. For example, the expressive violence and activity in paintings by de Kooning or Pollock marked the opposite end of the pole from the simple, quiescent images of Mark Rothko. Basic to most abstract expressionist painting were the attention paid to surface qualities, ., qualities of brushstroke and texture。 in response to activation of this nerve supply, smooth muscle contracts (notably in the gut), the frequency of heart beat is slowed, and glands secrete. Acetylcholine is also an important transmitter at many sites in the 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’。 反意疑問句( Unit 33) 用反意疑問句完成下列句子。 42. 你像你的母親或父親嗎? 43. 我周五得從房子里搬出來,因為佛朗哥又招了一位房客。 |7 m1 A/ j7 O0 A p。 A: Which of the two books do you like? 兩本書你喜歡哪本? B: Neither of them, thanks. 兩本都不喜歡,謝謝 Both the Eiffel and the Concorde have facilities. Eiffel和 Concorde 酒店都有收發(fā)電子郵件設(shè)施。 45. 帳目現(xiàn)在有點亂,必須要在下個月清理好。 I have been to Beijing. prefer 和 rather區(qū)分 I’d prefer to go to the theatre. rent 和 hire區(qū)分 I’m going to rent a flat. Play, do, go 與運動項目搭配時的區(qū)別 I do KungFu every Friday. He likes to play chess in his free time. 他直到 10點才起床。 I’m tired. I’ll take a taxi to go there. 我累了,我得乘出租車去哪兒。 42. 桑迪穿了條黑色的長絲裙。 neither/ neither of …/ neither… nor…。for/ since (Unit 27)中選詞填空。 While they were eating, they discussed the website. 他們一邊吃飯,一邊討論網(wǎng)站的事。 定語從句(非限定性和限定性)( Unit 34/ Unit 35) 把 下面的句子翻譯成漢語: He bought the trousers that I chose for him. 他買了我給他挑選的褲子 。 輔導(dǎo)老師的反饋 一部分: 1B 2C 3B 4C 5A 二部分: 6C 7A 8C 9A 10A 11A 12C 13B 14B 15A 16C 17A 18B 19C 20B 21B 22B 23C 24A 25B 三部分: 26A 27B 28C 29B 30B 31B 32B 33A 34C 35A 四部分: ’t you too big or red ’m afraid would rather ,她妹妹也一樣 。, and surrealism, became more personally expressive. Jackson Pollock39。 and the attempt to transfer pure emotion directly onto the canvas. The movement had an inestimable influence on the many varieties of work that followed it, especially in the way its proponents used color and materials. Its essential energy transmitted an enduring excitement to the American art scene. Science and technology is quite a broad category, and it covers everything from studying the stars and the plas to studying molecules and viruses. Beginning with the Greeks and Hipparchus, continuing through Ptolemy, Copernicus and Galileo, and today with our work on the International Space Station, man continues to learn more and more about the heavens. From here, we look inward to biochemistry and biology. To truly understand biochemistry, scientists study and see the unseen by studying the chemistry of biological process