选择恰当的字填空,把相应的序号填入横线处
那样透明光嫩的_____齿你在别的地方还看见过吗?
A:皓
B:浩
C:耗
D:昊
化简:2x2﹣3x2=____
① ② ③ ④
____—Who is she?
—She's Miss Fang.
—She's Mrs Wang.
—She's Mrs Li.
____—Who is he?
—He's Mr Zhang.
下列现象中,属于光的反射现象的是()