角θ的终边过点P（﹣1，2），则sinθ=（ ）
A：55
B：255
C：-55
D：-255
看图，给下列图片选择合适的句子或对话。
① ____ A. I have a new dress.
② ____ B. Look at my sweater. It's nice.
③ ____ C. My trousers are too long.
④ ____D. Look at his shirt. It's nice.
⑤ ____ E. In winter, I need a warm coat.
____ A. I have a new dress.
____ B. Look at my sweater. It's nice.
____ C. My trousers are too long.
____D. Look at his shirt. It's nice.
____ E. In winter, I need a warm coat.
，如果商是三位数，则除数最大是