【判断题】The United States of America consists of 50 states and a federal government. ________
【判断题】“蝙蝠、牡丹、双钱”的剪纸寓意是“富贵双全”。
【单选题】Which of the following statements are correct? I. The average economic growth rate in real GDP per person in the United States over the last century was 5 percent per year. II. The United States has...
【判断题】扶壁式其适宜高度为6~10m。具有厚度小,自重轻等优点。