第13题: [单项选择]Mr. Morton gradually ______ a knowledge of the subject. A. attained B. required C. acquired D. enquired 参考答案:C 答案解析:[解析] 本题空格处是说学到了知识。C项的“acquired学到(知识等)”符合题意,如:We must work hard to acquire a good knowledge of Englis
第23题: [单项选择]What is the author trying to tell us A. Happiness often goes hand in hand with pain. B. One must know how to attain happiness. C. It is important to make commitments. D. It is pain that leads to happiness. 参考答案:A 答案解析:作者的意图出现在第一段第三行。