第28题: [单项选择]What is the program A. In a domestic acrobatic contest. B. In an international acrobatic contest. C. In a normal contest. 参考答案:B 答案解析:[精解] 听力细节题。该对话中男士说"This program has won a gold medal in an international acrobatic contest."意思是这个节目曾
第30题: [单项选择]鸟类呼吸时,新鲜空气通过鸟肺的方向是()。 A. 吸气时新鲜空气均从头方到尾方穿过肺,呼气时是从尾方到头方穿过肺 B. 吸气和呼气时新鲜空气均从头方到尾方穿过肺 C. 吸气和呼气时新鲜空气均从尾方到头方穿过肺 D. 吸气时新鲜空气从头方到尾方穿过肺,呼气时是从尾方到头方不通过肺 参考答案:C