人教版必修二unit4_Wildlife_protection知识点总结_.ppt
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生物必修二知识点总结郑州一中 1106班 高唱一遗传的基本规律(1)基因的分离定律 ①豌豆做材料的优点: (1)豌豆能够严格进行自花授粉而且是闭花授粉自然条件下能保持纯种 (2)品种之间具有易区分的性状 ②人工杂交试验过程:去雄(留下雌蕊)→套袋(防干扰)→人工传粉 ③一对相对性状的遗传现象:具有一对相对性状的纯合亲本杂交后代表现为一种表现型F1代自交F2代中出现性状分离分离比为3:1
高中英语必修2(人教新课标)Unit 4 Wildlife protection?知识点总结一重点词汇? 词义辨析:die outdie ofdie from die away die downdie off ??die out灭绝灭亡?die of死于…(通常指疾病衰老等内因)?die from死于…(通常指交通事故等外因)?die away(声音风光线等)渐息渐弱?die down(慢慢
Period 3 Extensive ReadingThe General Idea of This Period:This period is about the reading of the passages:the disappearance of the dinosaurs and the dodosthe return of the Milu deer.It will help the
Period 1 ReadingThe General Idea of This Period:This period includes Warming upPre-readingReading andprehending of Unit 4.It introduces the wildlife situation in TibetZimbabwe and a rain forest.S
Period 4 ListeningThe General Idea of This Period:This period aims at training students two skills—understanding general idea and getting detailed information by getting familiar with tones and inton
Period 5 Speaking and WritingThe General Idea of This Period:This period aims at encouraging the Ss to think and talk creatively about the problems of the endangered animals and figure out some solut
Period 2 Learning about LanguageThe General Idea of This Period:This period will consolidate the words and expressions the students learnt in the reading part and deal with the grammar part:the Prese
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