A:Open the window
B:Close the window
C:Open the door
用所给词的适当形式填空
(1)It's time____(play)football.
(2)We want____(visit)the San Francisco next month.
(3)What about____(go)____(swim)tomorrow?
(4)—What are you going to do tomorrow? —I____(have)a party at home.
(5)She____(be)an English teacher next year.
某化学兴趣小组对“NaOH溶液与稀盐酸是否恰好完全反应”进行探究.请你参与他们的探究活动,并回答有关问题.
【实验探究】
函数y=Asin(ωx+φ)+k(A>0,ω>0,|φ|<π2,x∈R)的部分图象如图所示,则该函数表达式为( )