下列应用及相应原理(用化学方程式表示)都正确的是( )
A:用稀盐酸除铁锈 Fe2O3+6HCl=2FeCl2+3H2O
B:用二氧化碳制碳酸饮料 CO2+H2O=H2CO3
C:用电解水的方法测定水的组成2H2O=2H2↑+O2↑
D:工业用赤铁矿炼铁 CO+Fe2O3=Fe+CO2
下列哪个国家没有与中国陆地相邻( )
______ it's summer ______ winter, Mount Huang is well worth visiting.
用所给的单词的适当形式填空
①This is the ____ (one) time for me to see you.
②November is the ____ (eleven) month of the year.
③ My ____ (sister) birthday is on November 12.
④ September 10 is ____ (teacher) Day.
⑤ ____ (she) birthday is on May 5.
⑥ The ____ (five) lesson is very interesting.
小华所在的九年级一班共有50名学生,一次体检测量了全班学生的身高,由此求得该班学生的平均身高是1.65米,而小华的身高是1.66米,下列说法错误的是( )