房地产“泡沫”的形成原因主要有_____

[填空题]多点喷射的电控燃油喷射系统中ECU是通过控制喷油器的（）来控制喷油量大小的。

[单项选择]Parents can easily come down with an acute case of schizophrenia from reading the contradictory reports about the state of the public schools. One sat of experts asserts that the schools are better than they have been for years. Others say that the schools are in terrible shape and are responsible for every national problem from urban poverty to the trade deficit. One group of experts looks primarily at such indicators as test scores, and they cheer what they see: all the indicators—reading scores, minimum competency test results, the Scholastic Aptitude Test scores—are up, some by substantial margins. Students are required to take more academic courses—more mathematics and science, along with greater stress on basic skills, including knowledge of computers. More than 40 state legislatures have mandated such changes. But in the eyes of another set of school reformers such changes are at best superficial and at worst counterproductive. These experts say that merely toughening requirements, without either improving the quality of instruction or, even more important, changing the way schools are organized and children are taught makes the schools worse rather than better. They challenge the nature of the test, mostly multiple choice or true or false, by which children"s progress is measured; they charge that raising the test scores by drilling pupils to come up with the right answers does not improve knowledge, understanding and the capacity to think logically and independently. In addition, these critics fear that the get-tough approach to school reform will cause more of the youngsters at the bottom to give up and drop out. This, they say, may improve national scores but drain even further the nation"s pool of educated people. The way to cut through the confusion is to understand the different yardsticks used by different observers. Compared with what schools used to be like "in the good old days", with lots of drill and uniform requirements, and the expectation that many youngsters who could not make it would drop out and find their way into unskilled jobs—by those yardsticks the schools have measurably improved in recent years. But by the yardsticks of those experts who believe that the old school was deficient in teaching the skills needed in the modern world, today"s schools have not become better. These educators believe that rigid new mandates may actually have made the schools worse.The assertion of the experts who think schools axe doing better is based on the______.
A. qualification of the teachers
B. test scores
C. reading ability of the children
D. basic skills of the children

[多项选择]房地产“泡沫”的形成原因主要有______。A. 土地供应量过大B. 房地产价格快速上涨C. 过度的投机炒作D. 房地产投资失败E. 群体的非理性预期

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[多项选择]房地产“泡沫”的形成原因主要有______。
A. 土地供应量过大
B. 房地产价格快速上涨
C. 过度的投机炒作
D. 房地产投资失败
E. 群体的非理性预期