【单选题】I should very much like to have gone to the party but I _________.
【简答题】完形填空。 Dear Editor, I am a reader of your magazine and I need help. I am very 1 these days because I have some problems with my new school. I am a Grade 8 student. I just moved to Beijing with my paren...
【单选题】--- I am surprised to hear that Sue and Paul have ______. ---- So am I. They seemed very happy together when I last saw them.
【简答题】如图,设 A( 3 2 , 1 2 ) 是单位圆上一点,一个动点从点A出发,沿圆周按逆时针方向匀速旋转,12秒旋转一周.2秒时,动点到达点B,t秒时动点到达点P.设P(x,y),其纵坐标满足 y=f(t)=sin(ωt+φ)(- π 2 <φ< π 2 ) . (1)求点B的坐标,并求f(t); (2)若0≤t≤6,求 AP ? AB 的取值范围.
【简答题】如图,设 是单位圆上一点,一个动点从点 出发,沿圆周按逆时针方向匀速旋转,12秒旋转一周. 秒时,动点到达点 , 秒时动点到达点 .设 ,其纵坐标满足 . (1)求点 的坐标,并求 ; (2)若 ,求 的取值范围.