题目

Studying abroad will shape you in various ways. You will learn things you never would have if you study overseas. But college is expensive in the United States. It’s cheap or free in other countries even for foreigners, so why not get out of here and come back smarter? More and more American students are currently studying at German colleges. That number has increased by 20% over the last three years. Living costs are about $7,000 a year, which is even lower than in other European countries and a great appeal to many students wanting to studying abroad. Besides, Germany encourages inte10．将CO2持续通入下列八种饱和溶液：①Na2CO3  ②Na2SiO3  ③NaAlO2  ④C6H5ONa   ⑤Ca（ClO）2  ⑥CaCl2  ⑦NH3和NaCl  ⑧Ca（OH）2，最终能得到沉淀、浊液或析出晶体的是（　　）A．②⑤⑧B．⑤⑥⑧C．①②③④⑦D．②③④⑧