第18题: [单项选择]心脏本身的供应血管是() A. 头臂干 B. 左右锁骨下动脉 C. 左右颈总动脉 D. 左右冠状动脉 E. 胸主动脉 参考答案:D
第19题: [单项选择]I can't understand how he can fell that his colleagues are always ready to denounce him. A. compliment B. criticize C. flatter D. challenge 参考答案:B 答案解析:denounce公开指责,谴责;criticize批评,责备;compliment恭维,称赞;flatter奉承,过分夸赞;challenge挑战。