马克思主义新世界观创立的关键在于马克思确立了( )。
A．剩余价值论
B．阶级斗争理论
C．无产阶级历史观
D．科学的实践观
参考答案：D
解析： A项中的剩余价值论是马克思主义最伟大的两大发现之一；B项中的阶级斗争理论不是马克思想提出的，C项中的无产阶级历史观属于马克思科学社会主义的内容；D项中创立马克思主义世界观的关键是马克思确立了科学的实践观。故正确答案为D。
任务型阅读 阅读下面短文,根据所读内容在文后A到J的空格里填入一个单词.注意：每空仅填一个单词. Host family accommodation, or living with host families, remains popular among language travel students for its advantages. These days, host families are trying to offer more in terms of quality, for they still have something to worry about. Host family accommodation is often seen as the number-one choice for advantages in language study, cultural communication and cost of living. Staying alongside host families enables students to get enough practice for the short time of their studying so that their language acquisition is likely to become faster. Living in host families also has the advantages for students of being able to spend a lot of time communicating with their “host parents”, and get to know the local way of life, people and culture. Another advantage is that host family accommodation can sometimes be the least expensive. It attracts students for it ensures them a family type of living at a low cost. The advantage, however, have not prevented host families from worrying. On one hand, some host families are losing their unique selling point. The problem is that the majority of hosts in big cities, now generally single and young, have less time available for students, but the selling point for host family accommodation is communication practice. On the other hand, students’ expectations have risen. They are becoming more demanding and asking for more than ever from their accommodation, as they come mainly from high socio-economic groups in their own countries. To get out of the difficult situation, host families are now making efforts to improve the quality of service. They are trying to make living conditions better, including broadband（宽带） Internet service, private bathroom, and access to plenty of hot water for long showers. They are also providing students with structured family activities. It is believed that host family accommodation will keep the popularity vote with language travel students. Title: Host Family Accommodation
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Host families are improving the accommodation __16____
cost of ___20___
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