油炸食物不宜多吃，因为食物长时间煎炸后产生微量的丙烯醛（化学式C3H4O）等有毒物质，会损害人体健康。下列有关丙烯醛的说法不正确的是
What worried the boy most was to visit his father in the hospital. A．his not being allowed B．his not allowing C．h
运动着的物体，若所受的一切力突然同时消失，那么它将( ).【0.5】(A)立即停止 (B)先慢下来，然后
某原子的最外层电子排布为nsnnp2n-1,则该元素在周期表中的位置为（ ） A．第二周期，ⅢA族 B． 第七周期，ⅡA族 C．第五
When we talk about intelligence, we do not mean the ability to get good scores in certain kinds of tests or even the ability to do well in school. By intelligence we mean a way of living and behavi
如图1，点C、B分别为抛物线C1：y1=x2+1，抛物线C2：y2=a2x2+b2x+c2的顶点．分别过点B、C作x轴的平行线，交抛物线C1、C2于点A、D，且AB=BD．【小题1】求点A的坐
It is not difficult to ______ Mr. Huang from among a crowd because he is above average height. A. leave out B. pick out
在世界金融危机背景下，“凝聚信心”、“保八”、“扩大内需”等成为2009年我国社会流行的热词。这体现了 A．社会存在决定社会意识
