题目内容

近年来，计算机在各个领域中的应用越来越广泛。 In recent years, the computer is finding ______________________________.

查看答案

搜索结果不匹配？点我反馈

更多问题

某家用电器生产企业准备招聘一名采购经理，“谈判能力”是需要考察的一项重要内容，同时在今后的绩效考评中，也会将该能力列入采购经理的PCI指标进行考核。请回答：对“谈判能力”进行考察，采用评价中心测试和文件筐测试法哪种更为合适？为什么？（7分）

在中学物理教学中，教师要求学生从推动力、绳长和摆锤重量三个因素中找出影响单摆振动频率的因素。学生可以通过假定某两个因素保持恒定、依次改变第三个因素来看单摆振动频率的变化，借此找出问题的答案。而小学生往往会同时改变两个变量寻求解决方案，其结果是无法找出影响单摆振动频率的因素。请根据皮亚杰的思维发展阶段理论分析；中学生的认知发展处在什么阶段？

现有三个番茄品种，A品种的基因型为AABBdd，B品种的基因型为AabbDD，C品种的基因型为aaBBDD，三对等位基因分别位于三对同源染色体上，并且分别控制叶形、花色和果形三对相对性状。请回答：如何运用杂交育种方法利用以上3个品种获得基因型为aabbdd的植株（用文字简要描述获得过程即可）

Questions 51 to 55 are based on the following passage. There are thousands of volcanoes all over the world. What makes volcanoes What happens The inside of the earth is very hot. Because it is very hot, the rock has melted like ice. It has become liquid, like water. It is always boiling, like water in a kettle. If you have seen a kettle boiling, you know that the steam and boiling water try to get out. The very hot melted rock inside the earth also tries to get out. Usually it cannot because the outside of the earth is too thick and strong. But in some places the outside of the earth is thin and weak. Sometimes a crack （a small opening） appears. The hot melted rock , which we call “lava”, pushes up through the crack and bursts through . Steam and gas shoot up into the air and the hot melted lava pours out. Big pieces of rock may be thrown high into the air. After a while the volcano becomes quiet again. The melted lava becomes hard. Later the same thing happens again and again. Each time more hot lava pours out on top of the cold lava and then becomes hard. In this way a kind of mountain is built up, with a hole down the middle. Although there are thousands of volcanoes in the world, most of them are dead. Only about 500 sometimes start to throw out lava again. A famous volcano which is now dead is Mount Fujiyama in Japan. It is covered with snow on winter. Vesuvius is the name of a very famous volcano in Italy. It first came to life many, many years ago. It was quiet for hundreds of years. Then in the year 79 it suddenly burst. This has happened again many times since that year. Sometimes no damage was caused or only little damage. But there was serious damage in the years 472, 1631, 1794, 1861, 1872 and 1906. Statements: A famous volcano which is now dead is Mount Fujiyama in Italy.

A. 对
B. 错