When Paul was a boy growing up in Utah, he happened to live near a copper smelter (炼铜厂), and the chemicals that poured out had made a wasteland out of what used to be a beautiful forest. One
写作（60分）请以“ 的我”为题，写一篇作文。要求：⑴先把题目补充完整，然后作文；⑵字数不少于600。
一位同学在测质量时，在天平右盘里无论怎样加减砝码都不能使横梁平衡，下列方法中正确的是：A．交换左右托盘B．旋动平衡螺母C．移动游码D．同时
I can never forget the day ________ we worked together and the day ________ we spent together. A. when; which B. which; when C. what; that D. on which; when
What a wonder! They’ve finished _________half of the project in such a short time． A．no more than B．no less than C．not more than D．much less than
(本小题满分15分)已知A(1,1)是椭圆上一点,F1,F2,是椭圆上的两焦点,且满足 (I)求椭圆方程; (Ⅱ)设C,D是椭圆上任两点,且直线AC,AD的斜率分别为,若存在常
我们的共和国已经走过了60年的风雨历程，回首来路，我们心潮起伏。请以“国庆60年”为话题写一段文字。要求所写句子包含比喻、排比、对仗这三种
右侧漫画的哲学寓意是A．必须在改造主观世界的同时，改造客观世界B．必须坚持适度原则 C．必须牺牲个人利益去维护人民利益D．必须树立正确的
