第2题: [单项选择]Passage OneA. It keeps blood vessels from being blocked. B. It speeds up their recovery after surgery. C. It increases the blood flow to the heart. D. It adjusts their blood pressure. 参考答案:A 答案解析:[解析] In what way can aspirin help heart surgery patients according to the doctors
第13题: [单项选择]Sandy ____ be out of hermind to have spent that much money on an old car. A. should B. must C. can D. will 参考答案:B 答案解析:句意是:Sandy花了那么多钱买辆旧车肯定是疯了。
should表示一定,必须(用在客观情况下);must表示一定,必须(用在主观情况下);can一般表示某人能够做某事;will表示将来会做某事。根