A:What they did recently.
B:How people celebrate Thanksgiving.
C:How they spent the past Thanksgiving.
A、B两地相距10千米,甲、乙二人同时从A地出发去B地,甲的速度是乙的速度的2倍,结果甲比乙早到13小时.设乙的速度为x千米/时,则可列方程为( )
A: Hi, Alice! ____
B: No, they're not. ____
A: Is the dictionary hers, too?
B: ____It's mine.
A: ____
B: It's mine, too.
A: Can I borrow your pencil?
B: Yes.
B: You're welcome.
A. No, it isn't.
B. Are these books yours?
C. Thank you!
D. They are Helen's.
E. What about the pencils?
血液中含水量最多并且与体内的物质运输有关的成分是( )
如图1,在等边△ABC中,点D是BC边的中点,点P为AB 边上的一个动点,设AP=x,PD=y,若y与x之间的函数关系的图象如图2所示,则等边△ABC的面积为( )