解析 DThe only correct answer is DA is not correct because sodium is an elementnot a mixtureB is not correct because chlorine is an elementnot a mixtureC is not correct because sodium chloride is apure compound not a mixture 反馈 收藏 ...
【单选题】Which of these is not an organic compound?A. WaterB. SugarsC. ProteinsD. Lipids
所谓面源污染，是指溶解的或固体的污染物从非特定的地点，在降水（或融雪） 的冲刷作用下，通过径流过程而汇入受纳水体（包括河流、湖泊、水库和海湾等），并引起水体的富营养化或其他形式的污染，是相对于点源污染而言的一种水环境污染类型。
What is the correct order of adjectives in English? A. Opinion, size, age, shape, color, origin, material, purpose B. Size, color, age, shape, opinion, origin, material, purpose C. Age, opinion, shape, color, material, origin, size, purpose D. Origin, material, shape, size, opinion...
B Each of the 14 groups are going to contribute an item to the auction. C Which one of these shirts is your favourite? D Either Dennis or Susan is going to pick you up. Which of the following sentences uses concrete language? A Jerry saw that the glass was really dirty. B When i ...
To determine which of the given options is a compound, we need to analyze each option based on the definition of a compound. A compound is a substance formed when two or more different types of atoms bond together in a fixed ratio. 1. Identify the Options: - Option A: Glass - Option...
Highlight of Sentence Structure This is a Compound Sentence with 2 Independent Clauses joined by ...
is a compound sentence. 答案:× 1、【单选题】Which is a good topic sentence? A、How to register for college classes. B、The benefits of TV to children. C、The importance of reading. D、Registering for college classes can be a frustrating experience for new students. 答案:French perfumes ...
Which of the following sentences is a compound sentence? A.The rich soil of river-made favoured the growth of a thickly settled farming population and this farming population had been united into a highly civilized kingdom. B.Of course, they could not see with their eyes, but they thought ...
右季肋区疼痛2个月。CT检查:肝右叶llcm×7cm肿块,包绕、压迫下腔静脉,肝左叶内多个小的低密度结节。经检查确诊为原发性肝癌。患者,女性,62岁。右季肋区疼痛2个月。CT检查:肝右叶llcm×7cm肿块,包绕、压迫下腔静脉,肝左叶内多个小的低密度结节。经检查确诊为原发性肝癌。原发性肝癌最常见的转移方式...