Dogs have a very good ______ of smell and are often used to search for survivors in the earthquake.
A：sense
B：view
C：meaning
D：idea
关于等温线图的判读，不正确的是（ ）
抛物线x2=4y的焦点为F，过F作斜率为 33 的直线l与抛物线在y轴右侧的部分相交于点A，过A作抛物线准线的垂线，垂足为H，则△AHF的面积是（ ）
