第7题: [单项选择]关于颞下颌关节紊乱综合征的叙述哪项是错误的 A. 好发于青壮年,是一组疾病的总称 B. 关节内微小创伤与精神心理因素是本病的两个主要致病因素 C. 本病有自限性,一般不会发生关节强直 D. 三个主要临床症状是:下颌运动异常、自发痛及关节弹响和杂音 E. 以保守治疗为主 参考答案:D
第35题: [单项选择]If a adder hears you approaching, it will usually ______. A. move out of your path B. take no notice of you at all C. disappear very quickly D. wait until you are close and then attack 参考答案:A 答案解析:[解析] 文章第三段末尾指出:If it hears you coming,it will normally get out of the way as quickly as it can,but a