淋巴系统包括（）
A.淋巴管和淋巴器官
B.心脏
C.心肌
D.心脏和淋巴管
参考答案：A
行政行为
Mr. Smith, _______ of the _____ speech, started to read a novel.
A．tiring; bored
B．tired; bored
C．tired; boring
D．tiring; boring
