题干

国家开发投资公司是央企中唯一的投资控股公司,其管理的先进制造产业投资基金,由中央财政出资60亿元、国投出资40亿元和社会募资100亿元组成。该基金主要投向高端船舶和海洋工程、工业机器人等与“中国制造2025”相吻合的行业。材料表明(  )

①混合所有制经济是我国社会主义市场经济的根基

②非公有制经济对我国先进制造业的支撑作用越来越大

③国有经济对我国战略性新兴产业的的发展起着主导作用

④公有制为主体、多种所有制经济共同发展是我国的基本经济制度

A:①②

B:①③

C:②③

D:③④

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D

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    Hello,everybody.Welcome to surf on a new Web site—SCIENCE NEWS FOR KIDS!

    Our goal is to offer timely items of interest to kids,accompanied by suggestions for hands on activities,books, articles,Web resources,and other useful materials.

    Our emphasis is on making the Web site attractive by offering kids opportunities to comment on and grade the subject matter,get ideas for science projects,and try out math puzzles.At the same time,we offer teachers creative ways of using science news in their classrooms.

    The Science News for Kids Web site,supported by several corporations and foundations,strengthens the usefulness of Science News in the middle-school classroom and offers entertaining reading and activities for students interested in science.

    A section of the Science News for Kids Web site is devoted to particular interests.At present,we have six such zones: a weekly brainteaser(难题)for those who enjoy solving and inventing puzzles (PuzzleZone),entertaining science-fiction composition exercises for those interested in writing (SciFiZone),and weekly science short description along with science project ideas and tips (ScienceFairZone).The GameZone contains a small selection of logic and memory games.The TeacherZone has materials,including question sheets related to the feature article of the week,so that teachers can bring science news topics to the classroom.The LabZone features a weekly hands on activity or science project idea.In the future,we might add additional zones,for example,for kids interested in robotics,the environment,computers,math,or veterinary(兽医的)medicine and animals.

    Contact us at editor@snkids.com.         Science News for Kids            1719 N Street,N.W.

    Washington,DC 20036                 Phone :202-785-2255             Fax: 202-659-0365