都会
That student _____ his hand every time I asked a question.
That student \_\_\_\__ his hand every time I asked a question.
According to the passage, Argentina is world-famous because of its _____.
According to the passage, Argentina is world-famous because of its \_\_\_\__.
痕迹的研究目前正在逐渐形成一门科学。在痕迹的应用上，用来侦破案件大概是最常见的事。一个罪犯无意间在茶杯上留下指纹，他很快就成为了瓮中之鳖。间谍用显影药水书写密信，不管隐蔽多巧妙，一经特别显影就“真相大白”。最近美国人发明了一种侦破新技术——头发分析，可测出一百分之一到一亿分之一克的微量元素，头发中的十种元素，铝、钠、铁、氯……尽管微乎其微，仍会留下“影子”，这对于鉴别罪犯无疑提供了有力的证据。 人类巧妙地利用痕迹的例子有不少。例如我们祖先留下的劳动工具，出土的石斧、石刀，其中有磨损的印迹，虽然岁月使之模
痕迹的研究目前正在逐渐形成一门科学。在痕迹的应用上，用来侦破案件大概是最常见的事。一个罪犯无意间在茶杯上留下指纹，他很快就成为了瓮中之鳖。间谍用显影药水书写密信，不管隐蔽多巧妙，一经特别显影就“真相大白”。最近美国人发明了一种侦破新技术——头发分析，可测出一百分之一到一亿分之一克的微量元素，头发中的十种元素，铝、钠、铁、氯……尽管微乎其微，仍会留下“影子”，这对于鉴别罪犯无疑提供了有力的证据。
如果纸币发行量过多，就会引起物价上涨，影响人们的生活和社会经济秩序；如果纸币发行量过少，会使商品销售发生困难，直接阻碍商品流通。纸币是价值符号，其发行量应以流通中实际需要量为限度，否则（ ）。
如果纸币发行量过多，就会引起物价上涨，影响人们的生活和社会经济秩序；如果纸币发行量过少，会使商品销售发生困难，直接阻碍商品流通。纸币是价值符号，其发行量应以流通中实际需要量为限度，否则（ ）。
Practice 6 Then came the First World War and the Second World War. (1) After each war, new ideas, new attitudes, new trades and occupations were revealed to villagers. The long-established order of society was no longer taken for granted. Electricity and
Practice 6 Then came the First World War and the Second World War. (1) After each war, new ideas, new attitudes, new trades and occupations were revealed to villagers. The long-established order of s
All relationships go through power straggles but, he says, if a love imbalance continues for years, the rot will set in.
All relationships go through power straggles but, he says, if a love imbalance continues for years, the rot will set in.