写单词,补全句子。(每空一词)
A: ____ he usually have breakfast at seven o'clock?
B: No, but he____ breakfast at seven yesterday.
(Ⅱ)已知x∈ π2 , 3π2 ,且sinx=﹣ 35 ,求tanx的值.
计算:
(1)(48﹣418)﹣(313﹣20.5)
(2)8+482-12-2-32.