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问题 选择题

面对色彩斑斓的网络文化世界，近年来我国深入开展整治互联网和手机媒体淫秽色情及低俗信息等行动。开展这一行动可以帮助青少年[ ]

①提高辨识能力，抵制腐朽文化②崇尚流行文化，培养健全人格③维护文化安全，坚持多元指导④陶冶道德情感，升华思想境界

A．①②④

B．②③④

C．①④

D．②③

答案

答案：C

填空题

贴地层是指距地面（）m的气层。
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单项选择题

Mary A Contrary has a SHORT position in 15 November heating oil contracts. She buys 15 December heating oil contracts. Ms. Contrary has:()

A. closed her futures position by offset. 

B. initiated a new LONG futures position in addition to her existing SHORT position. 

C. initiated an exchange-for-physicals (EFP).
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