原式=(1-sin45°)2+cos45°
=(1-22)2+22
=1-22+22
=1．
I’m just wondering ___ I first met Tom.
A．where it was that
B．that was it where
C．where was it that
D．that it was where
《水法》不适用（）
A.渤海
B.长江
C.黄河
D.塔里木地下蓄水层
