【正文】 ：（ 略 ） 階段性學習體會：（略）（一定要自己寫） 作業(yè) 2 一、交際 用語 1～ 5 C A D A D 二、詞匯與結構 6～ 10 D B B C B 11～ 15 A C B A D 16～ 20 B C D C D 三、完型填空 21～ 25 B B A C D 26～ 30 B B C B A 四、閱讀理解 31～ 35 B B A D D 36～ 40 A C B B B 41～ 45 D A B C C 46～ 50 T F F T T 五、書面表達 Notice There will be an English lecture on American lndians and American History by miss lycidro,an American professor from shenzhen TV university . 3 If will be given in the hall of the culture in our university on Saturday evening from 7:30 to 9:30 your friends from other schools to att. 學習記錄卡 3 （ Units 13～ 18） 學習過程： 輔導訂前完 成的學習內容： A、做教材中大部分練習 B、熟悉生詞和詞組 C、將不懂的地方記錄下來 D、其他 輔導課上的學習任務： A、聽輔導教師講授 B、積極參與各項課堂教學話動 C、解決疑難問題 D、其他 輔導課后的學習內容： A、完成剩余的練習 B、復習主要語言點 C、自己找一些練習題進一步鞏固所學內容 D、其他 希望輔導教師提供的幫助是： A、答疑解惑 B、系統歸納和講解 C、有針對性地講解重點、難點 D、其他 學習內容： Units 13～ 18 中主要學習了哪些重要的語法項目？ 動名詞與動詞不定式、非限 定性定語從句、將來完成時、現在進行時的被動語態(tài)、現在完成時的被動語態(tài)、間接引語和間接引語、反意疑問句 這六個單元中我感覺最難或還沒有完全掌握的語言點是：（略） 這六個單元中我最喜歡的話題是：（略） 印象最深的 Cultural Notes 是 ：（ 略 ） 階段性學習體會：（略）（一定要自己寫） 作業(yè) 3 作業(yè)題目：（略） 學期總結 你認為學習本課程在多大程度上提高了你的英語水平？請從聽、說讀、寫四方面具體談一談。（略） 你對本課程所使用的教學資源（包括文字教材、錄音錄像教材，網上輔導等）有何評價？有 什么意見和建議？（略） 通過這一學期的學習，你對 “自主學習 ”這種學習模式有什么感受和體會？（略） 課內、外綜合表現（學生自評略） 4 請您刪除一下內容， O(∩ _∩ )O 謝謝！?。?2021 年中央電大期末復習考試小抄大全，電大期末考試必備小抄，電大考試必過小抄Acetylcholine is a neurotransmitter released from nerve endings (terminals) in both the peripheral and the central nervous systems. It is synthesized within the nerve terminal from choline, taken up from the tissue fluid into the nerve ending by a specialized transport mechanism. The enzyme necessary for this synthesis is formed in the nerve cell body and passes down the axon to its end, carried in the axoplasmic flow, the slow movement of intracellular substance (cytoplasm). Acetylcholine is stored in the nerve terminal, sequestered in small vesicles awaiting release. When a nerve action potential reaches and invades the nerve terminal, a shower of acetylcholine vesicles is released into the junction (synapse) between the nerve terminal and the ‘effector’ cell which the nerve activates. This may be another nerve cell or a muscle or gland cell. Thus electrical signals are converted to chemical signals, allowing messages to be passed between nerve cells or between nerve cells and nonnerve cells. This process is termed ‘chemical neurotransmission’ and was first demonstrated, for nerves to the heart, by the German pharmacologist Loewi in 1921. Chemical transmission involving acetylcholine is known as ‘cholinergic’. Acetylcholine acts as a transmitter between motor nerves and the fibres of skeletal muscle at all neuromuscular junctions. At this type of synapse, the nerve terminal is closely apposed to the cell membrane of a muscle fibre at the socalled motor end plate. On release, acetylcholine acts almost instantly, to cause a sequence of chemical and physical events (starting with depolarization of the motor endplate) which cause contraction of the muscle fibre. This is exactly what is required for voluntary muscles in which a rapid response to a mand is required. The action of acetylcholine is terminated rapidly, in around 10 milliseconds。 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 nerveton