A：过氧化氢
B：高锰酸钾
C：水
D：洁净的空气
2013年12月19日，部分美国参议员提出一项针对伊朗的新制裁议案。白宫发言人卡尼立即作出回应，称若议案获得通过，奥巴马将动用否决权。由此可见( )
生活中，有很多动物被称为“鱼”．下列哪种是真正的鱼类（ ）
By yesterday, the plane ______out of view for more than a month.
He couldn't____ ____ ____a proper answer at the time.
-- I heard that there are a few seats left for tonight's show.
-- Really? I was under the impression ______ they were sold out a long time ago.
