职称英语B2021职称英语综合类B补全短文试题及答案解析三.doc
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1、职称英语B2021职称英语综合类B补全短文试题及答案解析三Reinventing the TableAn earth scientist has rejigged the periodic table1 to make chemistry simpler to teach to students.1 But Bruce Railsback from the University of Georgia3 says he is the first to create a table that breaks with tradition and shows the ions of each elem
2、ent rather than just the elements themselves.“I got tired of breaking my arms trying to e_plain the periodic table to earth students,”he says, criss-crossing his hands in the air and pointing to different bits of a traditional table.2 But he has added contour lines to charge density, helping to e_pl
3、ain which ions react with which.“Geochemists just want an intuitive sense of whats going on with the elements,” says Albert Galy from the University of Cambridge4.3 4 He e_plains that sulphur, for e_le, shows up in three different spots one for sulphide, which is found in minerals, one for sulphite,
4、 and one for sulphate, which is found in sea salt, for instance.He has also included symbols to show which ions arc nutrients, and which are mon in soil or water.5词汇: rejig /r i:dVi/ n.调整,重新安排 ion /5aiEn/ n.离子 criss-cross /krIsEkrCs/ v.交叉 proton /5prEutCn/ n.质子 geochemist n.地球化学家 sulphur /5sQlfE/ n.
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