__ up late at night is bad for our health. [ ]
A. Stays
B. Stay
C. Staying
答案:C
色光的三原色是________、__________、__________.颜料的三原色是_________、__________、__________.
某女病人,患糖尿病3年,近日出现糖尿病酮症酸中毒,其呼吸特点为
A.呼吸浅慢B.叹气样呼吸C.呼吸音响异常D.深而大的呼吸E.表浅性呼吸