题目

—I’d like a pen which ________well. —Will this one_______? A. is written; do     B. writes; work  C. writes; do    D. is written; work 答案：C人在呼气时，膈肌和胸廓的变化情况是（　　）A．膈肌收缩，膈肌的顶部下降，胸廓的上下径增大B．膈肌收缩，膈肌的顶部上升，胸廓的上下径减小C．膈肌舒张，膈肌的顶部下降，胸廓的上下径增大D．膈肌舒张，膈肌的顶部上升，胸廓的上下径减小