题目

 下列溶液中Cl－浓度最小的是（ ） A. 200mL 2mol/L MgCl2溶液                   B. 300mL 5mol/L KCl溶液 C. 1000mL 2.5mol/L NaCl溶液                D. 250mL 1mol/L AlCl3溶液 答案：C选用所给的词并用其适当形式填空。每个词限用一次。     safe，strong，fascinate，speak，person，science，not arrive，   1．He wants to ask Tom a       questions．   2．New York is      ．It has wonderful galleries．   3．I’m anxious for his      ．   4．I ordered my food half an hour ago，but it      yet．   5．We must practice      English every day．   6．We should try to find a      method to improve our study．   7．My father is      against my going out to play my friends on Sundays．