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Modern science and technology has made ______ convenient ______ communication between people far apart.
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In American English, the letter "u"______ in words such as colour, labour, neighbour.
______包含了基础教育阶段中对语言知识即语音、词汇、语法、话题和功能的掌握以及对语言技能即听、说、读、写的综合运用。
某建设项目在实施过程中发生了以下3个事件： 事件1：该建设项目的业主提供了地质勘察报告，报告显示地下土质很好。承包商以此作了施工方案，拟用挖方余土做通往项目所在地道路基础的填方。由于基础开挖施工时正值雨季，开挖后土方潮湿，且易破碎，不符合道路填筑要求。承包商不得不将余土外运，另外取土做道路填方材料。 事件2：该工程按合同规定的总工期计划应于某年某月开始现场搅拌混凝土，因承包商的混凝土搅拌设备迟迟不能运往工地，承包商决定使用商品混凝土，但被业主否决。而在承包合同中未明确规定使用何种混凝土。承包商不得已，只有继续组织混凝土搅拌设备进场，由此导致施工现场停工，工期拖延和费用增加。 事件3：该工程项目备有地下室，属隐蔽工程，因而在建设工程合同中，双方约定了对隐蔽工程(地下室)的验收检查条款。规定：地下室的检查验收工作由双方共同负责，检查费用由业主负担。地下室竣工后，承包商通知业主检查验收，业主答复：因业主事务繁忙，由承包商自己检查出具检查记录即可。其后15天，业主又聘请专业人员对地下室质量进行检查，发现没有达到合同规定的标准，遂要求承包商负担此次检查费用，并对地下室工程返工。 问题： (1)对于事件1，承包商是否可以提出赔偿要求，为什么？ (2)对于事件2，承包商是否可以提出索赔要求，为什么？ (3)对于事件3，承包商如何处理，业主的事后检查费用由谁负担？
Some pessimistic experts feel that the automobile is bound to fall into disuse. They see a day in the not-too-distant future when all autos will be abandoned and allowed to rust. Other authorities, however, think the auto is here to stay. They hold that the car will remain a leading means of urban travel in the foreseeable future. The motorcar will undoubtedly change significantly over the next 30 years. It should become smaller, safer, and more economical, and should not be powered by the gasoline engine. The car of the future should be far more pollution-free than present types. Regardless of its power source, the auto in the future will still be the main problem in urban traffic congestion. One proposed solution to this problem is the automated highway system. When the auto enters the highway system, a retractable arm will drop from the auto and make contact with a rail, which is similar to those powering subway trains electrically. Once attached to the rail, the ear will become electrically powered from the system, and control of the vehicle will pass to a central computer. The computer will then monitor all of the car’s movements. The driver will use a telephone to dial instructions about his destination into the system. The computer will calculate the best route, and reserve space for the car all the way to the correct exit from the highway. The driver will then be free to relax and wait for the buzzer that will warn him of his coming exit. It is estimated that an automated highway will be able to handle 10,000 vehicles per hour, compared with the 1,500 to 2,000 vehicles that can be carried by a present-day highway. What is the author’s main concern
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