What is air made of?Question:What is air made of?The Earth's Atmosphere:The Earth's atmosphere is a layer--or series of layers--of gasses that envelope the Earth's surface. The atmosphere is usually divided into the troposphere, the stratosphere, the mesosphere, the thermosphere, and the...
根据第一段第一行“Air is not just one gas,it is a mixture of different gases,空气不仅仅是一种气体,它是不同气体的一个混合 ”可知答案为C,空气是不同气体的一个混合;A项:空气只是一种气体;B项:空气是两或三种气体的混合,第二段第一句提到“空气中主要有四种气体”故B错误;D项:空气不存在。2、...
What ___ the air dirty? ( ) A. make B. makes C. is making D. NO 相关知识点: 试题来源: 解析 [答案]B [解析]句意:什么使空气变脏?该句时态为一般现在时,疑问词what(什么)做主语时,谓语动词应用第三人称单数形式,make的第三人称单数是makes,故选B。反馈...
【答案】B【核心短语/词汇】air fare 飞机票价【翻译】确切的机票价格是多少?【解析】price表示“价格”,是名词,指商品在市场出售的价格,尤指卖方对商品所提出的单价;另有比喻意义,指付出的代价。例句:It is rather cheap at this price. 这东西卖这个价钱是相当便宜的。fare表示“费用,车费”,侧重指旅行时所...
Air is everywhere. When the air moves, it becomes wind. The air moves quickly, and the wind blows strongly. The air moves slowly, and the wind blows gently. Air is important to all of us. People need it. Animals and plants need it. So we must keep the air clean and fresh. Don'...
百度试题 结果1 题目【题目】What is the exact air?A.priceB.fareC.fee 相关知识点: 试题来源: 解析 【解析】B 反馈 收藏
like the Clean Air Act in the United States have reduced the presence of some pollutants. While major stationary sources are often identified with air pollution the greatest source of emissions is actually made up by mobile sources mainly the automobiles. Gases such as carbon dioxide w...
A。解析:本题考查主语从句的引导词。在主语从句中,需要一个词作主语,表示“什么使得这个城市的空气污染更严重”,what有这个含义。which表示“哪一个”,在这个句子里没有选择的含义,所以不符合;how表示方式,这里不是说如何使污染更严重,不符合题意;that在主语从句中无实际意义,不充当句子成分,这里句子缺少主语成分...
首先我们需要了解这个句子What is the exact air _ 的大致意思,句子中的"exact"是形容词确切的意思,那么这个句子意思为飞机的什么确切是多少,选项A.fare是名词车费的意思,选项B.fee是名词费用的意思,选项C.rate是名词比率的意思,我们只需分析三个选项,选出最简单即可。反馈...
一、由感叹词what引导的感叹句。1.① What+a/an+（形容词）+单数可数名词+主语+谓语！② What+名词词组+主语+谓语！如: What a fine day it is!2. What+(形容词）+可数名词复数或不可数名词+主语+谓语!如: What kind women they are!What nice music it is!二、由How引导的感叹句。（...