【单选题】In “She polished the piano with a duster cloth”, the word piano most probably means .
A.
a kind of musical instrument named “piano”
B.
a melody produced with piano
【简答题】决策过程的第一步是_______或识别机会。
【单选题】She is playing _____. [ ]
【简答题】测定发现,通常平静呼气之末胸内压约为 ,通常平静吸气之末胸内压约为 ,用力吸气时可达 。
【单选题】She is playing _____in the classroom. [ ]
【简答题】决策过程的第一步是诊断问题或A. 识别机会