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下面是一篇小学对话教学的教学材料及教学过程，请用中文回答以下两个问题。 1．本教学案例中，教师用了哪些教学方法(至少三种) 2．请分别对本教学案例中的呈现与操练、巩固与拓展两个环节存在的问题进行分析。 教学材料： A: Excuse me, sir. Where is the zoo B: Go straight. Then turn left. You"ll see it. A: Thank you. B: You"re welcome. 教学过程： Step 1 Greetings and Lead-in 1．师生问好 2．导入(教师用PPT呈现自己家的图片) T: Now, look at the picture. This is my house. It"s so beautiful. Would you like to come to my house Ss: Yes. T: Great. But do you know how to get to my house Ss: No. T: So today we"re going to learn how to ask the way and show the way. (板书并带读新课标题Asking the Way) 教师将全部成员分成两组，说明小组评价方式(黑板上画两个曲折的阶梯，阶梯顶上画一串香蕉，阶梯下贴两只小猴)，先拿到香蕉者为优胜者。 Step 2 Presentation and Practice 1．教学词汇： 教师出示卡片，教学新单词left和right，然后以“全部一小组一个人”模式进行操练； 教师出示卡片，教学新短语turn left, turn right, go straight，以同样方式进行操练。 2．Bomb Games 教师用PPT依次呈现所学词汇和表示方向的图标，学生要快速说出相应词汇，若遇到炸弹，学生只能拍手不能说出该词汇。做错的学生会遭到周围同学的轰炸，以此检测字体对词汇的熟悉程度和反应能力。 3．我说你做： 教师发出turn left, turn right, go straight的指令，全体学生根据指令用手势做出相应的动作。 4．师生对话(教师PPT呈现Tom家的位置) T: Look at the screen. Where is Tom"s house (请个别学生回答，此时板书句子：Where is ______ ______. Then______. You"ll see it(横线下分别贴上turn left, turn right, go straight的短语卡片) 5．教学课文 (1)用教学光盘呈现完整文章 (2)跟踪课文 (3)同桌练习 (4)上台表演 Step 3 Consolidation and Extension 教师用PPT呈现动物园各种动物，复习已经学过的动物类单词，接着教师问学生：How many monkeys can you see然后教师用Where is...提问，请学生用所学习的句型回答。
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某市的道路整修工程建设任务正在进行招标。有4个工程公司甲、乙、丙、丁投标。各公司经理对即将公布的投标结果分别做出猜测。甲公司经理说：“中标的只能是我们公司。”乙公司经理说：“中标的公司一定出自乙和丙两个公司之中。”丙公司经理说：“中标的若不是甲公司就是我们公司。”丁公司经理说：“如果必有一个中标的话，那就是我们公司了!”标底公开后得知，四人中只有一个人的预测成真了。 以下哪项判断最可能为真
A powerful earthquake struck an area near the northern coast of Chile on Wednesday. The earthquake came a day after an even stronger quake 1 the area. The earlier quake was 2 for at least six deaths.The United States Geological Survey says a 7.8 3 aftershock hit northern Chile late Wednesday night, local time. U.S. officials said the aftershock was centered about 23 kilometers south of the port of Iquique. They said it struck at a depth of 20 kilometers below sea 4 .The aftershock led Chilean officials to order thousands of people away from 5 areas. It also led to warnings of high tsunami waves in parts of the Pacific Ocean. The orders and tsunami warnings were later 6 . Chilean police and soldiers guarded coastal communities to prevent 7 on homes and businesses. Television video showed damaged buildings in Iquique. But officials found surprisingly 8 damage from the quake. President Michelle Bachelet visited the 9 area. She spoke to the nation about the disaster. She also said 10 measures have been taken to protect lives and property. Earthquakes are 11 common in Chile. They are also a fact of life in the American state of California. Scientists say a quake of magnitude eight or higher could strike along the San Andreas Fault in coming years. The San Andreas Fault extends from north to south through California. Thousands died in its last major rupture, or movement. 12 took place near the city of San Francisco in 1906.Smaller earthquakes also can be 13 if they strike close to heavily 14 areas. Safety experts say every home needs to have a plan of action, supplies food and water, and emergency equipment.Kate Hutton is a seismologist at the California Institute of Technology. She specializes in the study of earthquakes. Kate Hutton admits there is no way to 15 earthquakes, so being prepared is the best defense.
A powerful earthquake struck an area near the northern coast of Chile on Wednesday. The earthquake came a day after an even stronger quake 1 the area. The earlier quake was 2 for at least six deaths.The United States Geological Survey says a 7.8 3 aftershock hit northern Chile late Wednesday night, local time. U.S. officials said the aftershock was centered about 23 kilometers south of the port of Iquique. They said it struck at a depth of 20 kilometers below sea 4 .The aftershock led Chilean officials to order thousands of people away from 5 areas. It also led to warnings of high tsunami waves in parts of the Pacific Ocean. The orders and tsunami warnings were later 6 . Chilean police and soldiers guarded coastal communities to prevent 7 on homes and businesses. Television video showed damaged buildings in Iquique. But officials found surprisingly 8 damage from the quake. President Michelle Bachelet visited the 9 area. She spoke to the nation about the disaster. She also said 10 measures have been taken to protect lives and property. Earthquakes are 11 common in Chile. They are also a fact of life in the American state of California. Scientists say a quake of magnitude eight or higher could strike along the San Andreas Fault in coming years. The San Andreas Fault extends from north to south through California. Thousands died in its last major rupture, or movement. 12 took place near the city of San Francisco in 1906.Smaller earthquakes also can be 13 if they strike close to heavily 14 areas. Safety experts say every home needs to have a plan of action, supplies food and water, and emergency equipment.Kate Hutton is a seismologist at the California Institute of Technology. She specializes in the study of earthquakes. Kate Hutton admits there is no way to 15 earthquakes, so being prepared is the best defense.
文学大奖得主克里斯的作品在华丽中蕴含着凄美，在对善恶的讨论中不乏愤世嫉俗的成分。朝气蓬勃者读了她的作品后很多增加了一丝含蓄；而原本多愁善感的人读了之后常常更加忧郁，不乏后来轻生者。有人读了她的作品后对世事看得更清楚了，也有人变得玩世不恭，不再相信爱情之类美好的东西。有人甚至这样评价：如果你读了克里斯的作品，那么你不可能再相信爱情或者信仰。 以下哪项如果为真，最能反驳上述观点
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