A. from which you can form your report B. that you are interested in C. that your teacher approves D. that you already have in your mind 参考答案:B 答案解析:细节题。答案在第九句。无论你选择什么课题,你都应该对此感兴趣。
第31题: [单项选择]人体正常的血压范围是() A. 收缩压小于140mmHg,舒张压小于90mmHg B. 收缩压140~160mmHg,舒张压小于90mmHg C. 收缩压小于160mmHg,舒张压小于100mmHg D. 收缩压140~160mmHg,舒张压90~95mmHg E. 收缩压140~180mmHg,舒张压90~105mmHg 参考答案:A