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WAtEr is A liquiD 为什么要加A 如果不加会变成什么

翻译为水是一种液体,liquid是名词,前面要有冠词,所以不能把a去掉

前者

1-5: BDCBA

小题1:D小题2:C小题3:B小题4:C小题5:A 试题分析:这篇短文主要讲述了水的三种状态及其在自然界的循环过程。小题1:根据第一段When it is a solid, it can be as hard as stone. 描述,结合常识可知当水是固体时,它被叫做冰,故选D,冰。小题2:...

liquid water 液态水 双语例句 1. For example, scientists have found evidence that there could be liquid water—which is necessary for life on Earth—at many places on the Mars. 他说,比如,科学家曾经在火星上的很多地方发现曾有液态...

如果液体A和液体B在容器中按照2:3混合,则混合物中存在30.8%的究竟,如果它们按照3:5的比例混合,则酒精的比例是30.25%。找出酒精含量为15%时液体A与液体B的混合比例。

C 试题分析:考查定语从句。本题定语从句的先行词是water,在非限制性定语从句中which指代先行词作为介词without的宾语。句意:水以液态,固态和气态的形式存在于世界上,如果没有了水,我们就不能生存。根据句意说明本句表示的是一种假设,故...

The Water Cycle Water on Earth is always changing. Its repeating changes make a cycle. As water goes through its cycle, it can be a solid (ice), a liquid (water), or a gas (water vapor). Ice can change to become water or water ...

D 首先,前面和后面都是完整句子,所以B,C排除, such+名词+that precious 是动词,所以是so

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