第18题:[单选题] Insurance companies' attempts to minimize adverse selection and moral hazard explain which of the following insurance practices? A. Requiring collateral for policies B. Risk-based premiums C. Compensating balances D. All of the above E. Only A and B of the above 参考答案:B
第34题: [单项选择]If you want to become a doctor, you ought to study ______. A. medicine B. the medicine C. literature D. the literature 参考答案:A 答案解析:本题考查习惯用法。study+课程，表示“学…课程”，这时的课程无需加冠词。如study Chinese，study English等。句意为：如果你想成为一名医生，就应该学医学。
