第4题: [单项选择]We've been through some rough times together. A. short B. difficult C. long D. happy 参考答案:B 答案解析:rough:粗糙的、艰苦的,与difficult(困难的)意思接近;short:短的;long:长的;happy:幸福的。
第29题: [单项选择]It can be inferred from the passage that early hotelkeepers in the United States were______ . A. active politicians B. European immigrants C. professional builders D. influential citizens 参考答案:D