下列各句中没有语病的一句是:
A.有关部门对极少数不尊重民工的劳动,克扣民工工资,甚至殴打民工的事件,及时进行了批评教育和严肃处理。
B.一个民族可以用刀剑,或者用弓矢打败另一个民族;但是要征服一个民族的灵魂,绝非单凭刀枪剑矢就能做到的。
C.虽然互联网给我们带来了不少交流、商务、购物上的便利,但是我们对网上信息的真实性和安全性越来越感到质疑。
D.在对“建始人”古人类化石进行考证研究后,我国考古专家认为:“建始人”化石,对人类起源于非洲的学说是一个挑战。
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The 2010 Winter Olympic Games will take place in Vancouver and Whistler(惠斯勒) from February 12 to 28. As the world’s 小题1:_____ athletes will compete there, Canada is preparing for it well. It will be broadcasted(播出) in Canada’s two 小题2:_____languages——English and French. Billions of television viewers worldwide will 小题3:______ the opening ceremony of the 2010 Winter Olympic Games. Athletes from more than 80 小题4:______ will compete in 86 medal events over 17 days. Then the Paralympics(残奥会) will 小题5:_____ from March 12 to 21. Canada has 小题6:_____ millions of dollars preparing. Thousands of spectators will visit the country. Canada will be 小题7:_____ it all. The building of Olympic gyms began in 2005. Opening and closing ceremonies will be held indoors, at BC Place Stadium. It’ll 小题8:______55,000 seats. Some competitions, 小题9:______ ski, and bobsled, will take place in Whistler. It’s a ski village. During the Games, roads will be closed. More than 15,000 policemen will work to 小题10:______ the peace throughout the Games. The United States is the only country to host the Winter Games four times. Team USA hopes 2010 will be a golden year.
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2.0×10-5包含( )位有效数字。
A.2
B.1
C.3
D.0
( )是指企业出于扩大宣传的目的,将自己的网站提交到搜索引擎上,让相关的商品和服务信息进入到搜索引擎数据库,以增加与潜在顾客通过互联网建立联系的机会。企业网站被搜索引擎收录以后,企业需要不时追踪企业网站在搜索引擎巾的排名变化,若网站排名下降幅度较大,企业应考虑承新注册,并仔细分析原因,有针对性地对搜索引擎进行优化和维护。
A.竞价排名
B.搜索引擎臀录
C.搜索引擎优化
D.关键词广告
正在报警的警钟,每隔0.5s响一声,一声接一声地响着。有一个人在以60km/h的速度向警钟所在地接近的火车中,若声速为u=340m/s,则这个人每分钟听到的响声为()。
A.100响
B.126响
C.200响
D.250响
群体性动机