2010年1月9日至11日，全国第四次科技大会在北京召开。大会授予叶笃正院士、吴孟超院士2位专家国家最高科学技术奖，各奖500万元。国家主席胡锦涛发表重要讲话，强调指出：要加快国家创新体系建设，提高

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2010年1月9日至11日，全国第四次科技大会在北京召开。大会授予叶笃正院士、吴孟超院士2位专家国家最高科学技术奖，各奖500万元。***胡锦涛发表重要讲话，强调指出：要加快国家创新体系建设，提高科技创新的能力，实现科技创新和经济社会的发展的结合。经过15年的艰苦奋斗，到2020年，使我国的自主创新能力显著增强，科技促进经济社会发展和保障国家安全的能力显著增强，基础科学和前沿技术研究综合实力显著增强，取得一批在世界具有重大影响的科学技术成果，进入创新型国家行列，为全面建设小康社会提供强有力的支撑。上述材料说明( )
①我国重视科教兴国战略的实施
②我国已把发展科技作为一切工作的中心
③科技工作者的辛勤劳动得到了国家和社会的认可
④我国劳动者的整体素质已居世界领先水平

A：①②

B：③④

C：①③

D：②④

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C

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In England nobody under eighteen years old is allowed to drink in a bar（酒吧）. Mr. Thompson often went to a bar near his house. But he never took his son, Tom, because he was too young. Then when Tom had his eighteenth birthday, Mr. Thompson took him to his usual bar for the first time. They drank for an hour. Tom drank a bit. Then Mr. Thompson said to his son, "Now, Tom, I want to teach you a useful lesson. How do you know when you've had enough? Well, I'll tell you. Did you see those two lights at the end of the bar? When they seem to become four, you've had enough and should go home."

"But, dad, "said Tom, "I can only see one light at the end of the bar."

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