第9题: [单项选择]When doves are about two weeks old, they are covered with grey feathers and are ready to {{U}}try{{/U}} their wings. A. grow B. wrap C. hide D. test 参考答案:D 答案解析:try跟test意思相近：试，尝试。We are not ready to test the new design yet．我们尚未做好对新设计进行试验的准备。grow：成长；生长。It is a v
第17题: [单项选择]The middle class mainly refers to people ______ . A. who were born as aristocrat B. who have the right to sit in the House of Lords C. who speak in many different local accents D. who are prosperous businessmen or professionals 参考答案:D 答案解析:细节题。选项D意为“那些比较富裕的生意人或专业人士”。第一段的倒数第二句说：“The middle class consists chiefly of well-to-do businessmen a
