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现在世界各国普遍使用的货币为( )。
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格雷欣法则起作用于哪种货币本位制度( )。
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按马克思有关货币的理论,货币的两个基本职能是
ListeningA boot camp is a place for training new recruits (新兵) in the United States. Now it can mean any very strict training center such as the one used for curing Internet addiction. Listen to the recording two or three times. Then fill in the blanks based on what you have heard to complete the following sentences. You might come across the new words in the box in the listening passage.boot camp n. 训练营地threat n. 威胁heroin n. 海洛因disorder n. 混乱；失调military a. 军事的discipline n. 纪律[音频]1. China has many teenagers who have grown so dependent on the Internet that the country feels that Internet addiction (上瘾) is __________________ to its teenagers.2. According to a report released by Chinese experts, people with Internet Addiction Disorder spend __________________ online doing something that is not related to their work or study.3. Boot camps have opened up in China since _________. The camps aim to treat young addicts for their dependence on the Internet and video gaming.4. Professor Harwit of Asian Studies at the University of Hawaii says that Chinese parents are worried because they take __________ very seriously. Some parents even drug their children to take them to the camps.5. Hilla Medalia, a filmmaker who has produced a documentary about the camps, says that the teenagers are doing something like ______________ at the camps, and that officials believe a sense of _______________ is what patients need.
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