题目

so far, thanks to, look for, in search of, look forward to（1） I am seeing Frank again.（2）We have done most of the work .（3） my math teacher, I passed the math test easily.（4）They arrived at the island the unknown plant.（5）A mother crocodile (鳄鱼) wasfood near the seaside. 答案：【1】looking forward to【2】so far【3】Thanks to【4】in search of【5】looking for有两瓶无色溶液，分别是氯化钠和硫酸钠，若把它们区别开，下列最合适的是（ ）A．稀硝酸B．硝酸银C．硝酸银和稀硝酸D．氯化钡和稀硝酸