In Canada you can find dogs, cats, horses, etc. in almost every family. These are their pets. People love these pets and have them as their good friends. Before they keep them in their houses, they
实验室中配制100mL10﹪的稀硫酸，不需要使用的仪器是（ ） A．烧杯B．托盘天平C．量筒D．玻璃棒
（二）阅读下列文字，完成第18—19题。（共8分）①雾是一种常见的天气现象。当接近地面的大气中的水汽达到饱和状态时，大量的微小水滴或冰晶微粒
将潮湿的Cl2通过甲装置后，再通过放有干燥红色布条的乙装置，红色布条不褪色。则甲装置中所盛试剂（足量）可能是（ ） ①浓硫酸
在体积相同的两个密闭容器中分别充满O2、O3气体，当这两个容器内温度和气体密度相等时，下列说法正确的是 （ ） A．两种气体的压强相等
下面有五个命题： ①函数 ②直线图象的一条对称轴； ③在同一坐标系中，函数的图象有三个公共点。 ④把函数的图象。 ⑤函数在其定义域内是增函数
We’ve talked a lot _______ films. How _____ television now? A. of, with B. with, towards C. about, about D. for, about
I’ve loved my mother’s desk since I was just tall enough to sit above the top of it. Mother sat writing letters. Standing by her chair, looking at the ink bottle, pens, and white paper, I decide
