Oxygen-rich blood is the supply of blood in the body that has been oxygenated in the lungs. Through gas exchange in the alveoli of the lungs, oxygen molecules come in contact with the red blood cells and bond to the hemoglobin on those cells....
When calcium is burnt in oxygen, what colour is the flame?A. greenB. redC. whiteD. yellow 相关知识点: 试题来源: 解析 B 钙在氧气中燃烧会产生砖红色的火焰。这是因为钙元素燃烧时释放出特定波长的光,导致火焰呈现红色。因此,正确答案是 B。
解析 A核心短语/词汇:help sb./ sth. (to) do sth. 帮助某人/某物做某事句子译文:氧气是唯一的助燃气体吗? 本题考查定语从句。___helps fire burn 用来修饰之前的名词gas, 该从句的引导词在定语从句中做主语,不能省略,先行词有only 修饰时不能用which; what 不能引导定语从句,故选项A符合题意。反馈...
阅读理解。 What is blood? Blood is a thick, red fluid which carries oxygen, water and food to all parts of the body. It keeps the body at the right temperature (温度) and protects it from disease. If you lose a lot of blood, you need new blood. You can receive new blood from o...
百度试题 结果1 题目Is oxygen the only gas ___ helps fire burn A. which ﻩ B. what ﻩ C. that D. it 相关知识点: 试题来源: 解析 C 反馈 收藏
A.that B./ C.what D.it相关知识点: 试题来源: 解析 A 考查定语从句。Gas为先行词,在定从___ helps fire burn中作主语,且that作主语时不可省略。所以选A。 分析总结。 gas为先行词在定从helpsfireburn中作主语且that作主语时不可省略反馈 收藏 ...
bloodpressure,relieveanxietyanddepression,boostmood,andburncalories. 高中英语 选择性必修 第二册 第19页 19 Fifteenmonthslater,Ifoundanewhome,nestledinapatchofsouthLondonwoodland.I have30houseplantsintotalandmybalconybloomsallyeararound,soitfeelslikebothanoasis(绿 洲)andsomewheretothink. Lifeisstillsometimes...
根据原文One thing that makes octopuses seem like aliens is their blue blood.(让章鱼看起来像外星人的一个原因是它们的蓝色血液。)可知,血液是蓝色的。故选C。(3)细节理解题。根据原文but they are clever enough to know how to keep themselves safe many of the times.With their...
氧气对我们来说就像鱼跟水的关系~~~表语从句~~
The leaked blood may also collect in one area. This is called a hematoma. A hematoma can create pressure that keeps oxygen from flowing to the brain. Brain damage may happen within a few minutes if the brain cannot get enough oxygen. An ICH is a medical emergency that needs immediate ...