答案:D more>> most分析:考点是最高级的使用;由于有 Of all the elements 对比较范围进行了限定,因此要用最高级,将 more 改为 most;全句也是一个倒装结构,正常的语序是 Oxygen is known to be the most common of all the elements in the Earth’s crust.翻译:在地壳的所有元素中,氧被认为是最多的。
This is a table that shows the elemental chemical composition of the Earth's crust. Keep in mind, these numbers are estimates. They will vary depending on the way they were calculated and the source. 98.4% of the Earth's crust consists ofoxygen, silicon, aluminum, iron, calcium, sodium, ...
L. (2005). Abundance of the elements in the Earth's crust. In A. M. Russel & K. L. Lee (Eds.), Structure–property relations in nonferrous metals (p. 503). Hoboken: Wiley.Russell, A. M., & Lee, K. L. (2005). Abundance of the elements in the Earth's crust. In A. M....
Calcium, Ca, is the most abundant alkaline earth element in the Earth's crust and makes up approximately3.6 percentof the earth's crust. This fifth most abundant element in the earth's crust is a reactive element that readily forms compounds with oxygen and water and is not found free in ...
Compared with the present, the distribution of elements in the Earth's interior in the early days was ___. A. more uniform B. more scattered C. less complex D. more concentrated in the crust 相关知识点: 试题来源: 解析 A。解析:和现在相比,早期地球内部元素分布更均匀。在地球形成早期,物质...
The evaluation of the abundances of chemical elements in the Earth’s crust is a pivotal geochemical problem. Its first solutions in the early 20th century formed the empirical groundwork for geochemistry and justified concepts about the unity of the material of the Universe, the genesis of the...
The earth's crust is defined as the solid outer shell of the earth,and delimited fromthe top,the earth rigid surface,down deep to the Mohorovicic discontinuity.By such adefinition,the abundance of chemical elements in the crust is recalculated by a newmethod,named the regional geochemical meth...
Figure 1 shows theabundance of elements in Earth’s crust. Figure 1. The Elite Eight Elements. The elements are listed along the x-axis and the percentage is on the y-axis. All numbers are approximate. Oxygen is just below 50 percent; silicon is just about 25 percent. Calcium is 5 per...
An analysis of the relationship between the elements in the earth's crust and the life elements and a study of the pathogenesis of some typical endemic diseases have revealed that unbalance of trace elements in geochemical environments is likely to result in human diseases.The factors affecting th...
As we noted, although originally thought to be rare, many of the Rare Earth Element (REE) minerals are actually common in the Earth’s crust. However, these elements rarely exist in pure form; they are usually found within other minerals, making them difficult to extract from the ore and ...