看图读一读,连线。
① ____ A. Do you like ice cream? - Yes, I like ice cream.
② ____ B. Taste the noodles, Tom. Yummy.
③ ____ C. What do you hear? I hear a cat.
④ ____ D. What do you see? I see a bird. It's yellow.
已知sin(α+ π3 )+sinα=﹣ 435 ,﹣ π2 <α<0,则cos(α+ 2π3 )等于( )
Sam ____ (hide) behind the door when his mother came in.
下列关于实验现象的描述正确的是( )