默而（识）之，学而不大厌，诲人不倦，何有于我哉？
参考答案：动词，通“志”，记住。
If you want to be healthier, you shouldn't do _____ in the classroom all the time but do more _____ on the playground.
A．exercise; exercises
B．exercise; exercise
C．exercises; exercises
D．exercises; exercise
肝肠循环量最多的强心苷是（）
A.地高辛
B.洋地黄毒苷
C.毛花苷C
D.毒毛花苷K
E.黄夹苷
