题目内容
In a telephone survey of more than 2,000 adults, 21% said they believed the sun revolved (旋转) around the earth. An (1)7% did not know which revolved around (2) I have no doubt that (3) all of these people were (4) in school that the earth revolves around the sun; (5) may even have written it (6)a teat. But they never (7) their incorrect mental models of planetary (行星的) (8) because their everyday observations didn’t support (9) their teachers told them: people see the sun "moving (10) the sky as momin8 turns to night, and the earth seems stationary (静止的) (11) that is happening.Students can leant the right answers (12) heart in class, and yet never combined them (13) their working models of the world. The objectively correct answer the professor accepts and the (14) personal understanding of the world can (15) side by side, each unaffected by the other.Outside of class, the student continues to use the (16) model because it has always worked well (17) that circumstance. Unless professors address (18) errors in students’ personal models of the world, students are not (19) to replace them with the (20) one. 16（）
查看答案
搜索结果不匹配？点我反馈
更多问题
任意几个简单会计分录都可以合并编制成复合分录。
In a telephone survey of more than 2,000 adults, 21% said they believed the sun revolved (旋转) around the earth. An (1)7% did not know which revolved around (2) I have no doubt that (3) all of these people were (4) in school that the earth revolves around the sun; (5) may even have written it (6)a teat. But they never (7) their incorrect mental models of planetary (行星的) (8) because their everyday observations didn’t support (9) their teachers told them: people see the sun "moving (10) the sky as momin8 turns to night, and the earth seems stationary (静止的) (11) that is happening.Students can leant the right answers (12) heart in class, and yet never combined them (13) their working models of the world. The objectively correct answer the professor accepts and the (14) personal understanding of the world can (15) side by side, each unaffected by the other.Outside of class, the student continues to use the (16) model because it has always worked well (17) that circumstance. Unless professors address (18) errors in students’ personal models of the world, students are not (19) to replace them with the (20) one. 6（）
已知：A、B两种证券构成证券投资组合。A证券的预期收益率10%，方差是0.0144，投资比重为80%；B证券的预期收益率为18%，方差是0.04，投资比重为20%；A证券收益率与B证券收益率的协方差是0.0048。要求：（1）计算下列指标：①该证券投资组合的预期收益率；②A证券的标准差；③B证券的标准差；④A证券与B证券的相关系数；⑤该证券投资组合的标准差。（2）当A证券与B证券的相关系数为0.5时，投资组合的标准差为12.11%，结合（1）的计算结果回答以下问题：①相关系数的大小对投资组合预期收益率有没有影响②相关系数的大小对投资组合风险有什么样的影响
Michael Greenberg is a very popular New Yorker. He is not famous in sports or the arts, But people in the streets 16 him, especially those who are 17 . For those people, he is "Gloves" Greenberg. How did he get that 18 He looks like any other businessman, wearing a suit and carrying a briefcase (公文箱). But he’s 19 . His briefcase always has some gloves。 In winter, Mr.Greenberg does not 20 like other New Yorkers, who look at the sidewalk and 21 the street. He looks around at 22 .He stops when he 23 someone with no gloves. He gives them a pair and then he 24 ,looking for more people with cold 25 . On winter days, Mr.Greenberg 26 gloves. During the rest of the year, he 27 gloves. People who have heard about him 28 him gloves, and he has many in his apartment. Mr. Greenberg 29 doing this 21 years ago. Now, many poor New Yorkers know him and____30____his behavior. But people who don’t know him are sometimes 31 him. They don’t realize that he just wants to make them 32 . It runs in the 33 .Michael’s father always helped the poor as he believed it made everyone happier. Michael Greenberg feels the 34 .A pair of gloves may be a 35 thing, but it can make a big difference in winter. （16）应选（）
微信支付 
支付宝支付