When we use metals, it is important to know howthey react with different substances, for example,water and oxygen.当我们使用金属时,了解金属和不同的物质(例如水和氧气)如何发生反应很重要。react vi.(化学)反应※react with与……发生化学反应react to sb./sth.对某人/某物作出反应react against sb./...
When we use metals, ___ how they react with different substances,for example,water and oxygen.当我们使用金属时,了解它们与不同的物质如何反应是很重要的,例如,水和氧气。 答案 答案:it is important to know.因指的是一般事实,要用一般现在时;it是形式主语,真正的主语是动词不定式to know。故填:it is...
课文原句:When we use metals, it is important to know how they___different substances, for example, water and oxygen. 当使用金属时,我们要知道他们是如何与不同的物质,如水和氧气,发生反的,这〔一点〕很重要。 〔1〕〔化学〕反〔常与 with 搭配〕;〔物理〕产生反作用,排斥〔常与 upon/against...
“当我们使用金属时,重要的是要知道它们是如何与不同的物质 的,例如水和氧。”2. 对比选项。add v.增加;divide v. 划分,分配;react v.反应;come v. 来。3. 解题要点。本句题眼“metals”和“其他物质如水和氧”,所以此处应表示“了解它们如何(化学)反应”因此本题的答案为“反应”,选择C项。
1.react vi.(化学)反应(教材 P) When we use metals,it is important to knowhow they react with different substances,for example,water and oxygen.当我们使用金属时,了解它们和不同的物质(例如水和氧气)如何发生反应是很重要的。(1)react with与……发生反应react to对……)产生反应;回应react against...
When we use metals, it is important to know how they react with different (物质), for example, water and oxygen. 相关知识点: 试题来源: 解析 substances 考查翻译填空。 "物质" 为 "substance" ,句意:当我们使用金属时,知道它们如何与不同的物质反应是很重要的,例如,水和氧。该词为可数名词,故...
Metals react with oxygen to form metal oxides. The order of reactivity is the same as in the table on the last page. Sodium has a fast, vigorous reaction with oxygen, but copper reacts very slowly. Displacement Reactions A more reactive metal can ‘steal’ the salt ending off a less rea...
a消闲解闷的玩艺儿 Whiles away the time play thing which finds relief [translate] awhen we use metals , it is important to know how they react with different substances, for example, water and oxygen. 当我们使用金属时,知道是重要的怎么他们起反应用不同的物质,例如,浇灌和氧气。 [translate] ...
「主题与语篇填空」Metals expand when 1.(heat)and contractwhen cooled. How do they react with different 2.(substance)? Let's do a simple experiment.The aim of this experiment is to discover 3.iron rusts in dry air and in ordinary water. To carry out theexperiment, you need the 4.(fo...
This chemical class is about the of metals with oxygen and our teacher shows us how iron air and water.A. react; reacts with B. react; reacts toC. reaction; reacts to D. reaction; reacts with