第15题: [单项选择]牙列拥挤可分为(). A. 遗传性和后天性拥挤 B. 单纯拥挤和复杂拥挤 C. 替牙列拥挤和恒牙列拥挤 D. 前牙拥挤和后牙拥挤 E. 青少年拥挤和成人拥挤 参考答案:D
第16题: [单项选择]What can be concluded about Janet A. She has come to the party. B. She is hosting the party. C. She hasn’’t turned up. D. She is planning a party. 参考答案:C 答案解析:W: I can’’t imagine what happened to Janet.
M: Neither can I, but I’’m sure she planned to come to
第33题: [单项选择]属于血小板代谢活性检测的指标是 () A. 凝血酶调节蛋白 B. 纤维蛋白肽A C. 凝血酶原片段1+2 D. 血栓烷B2 E. 组织因子 参考答案:D 答案解析:血小板花生四烯酸代谢的主要活性产物是血栓烷A2,但血栓烷A2很不稳定,半衰期仅30秒左右,很快转变为稳定的无活性的血栓烷B2。通过测定