注射给药法
参考答案:注射法是将无菌药液注入体内,达到预防和治疗疾病的目的。
人工铲草皮时,切口一定要上下垂直,左右水平以保证草坪质量。( )
My brother is ____ years old.Today is his _____ birthday.
A.nine, nine
B.nine, ninth
C.ninth, ninth
D.ninth, nine