下列离子方程式正确的是（ ） A．铁跟稀硫酸反应：2Fe+6H+=2Fe3++3
题型：选择题
问题：
下列离子方程式正确的是（ ）
A．铁跟稀硫酸反应：2Fe+6H+=2Fe3++3H2↑
B．氢氧化钡跟盐酸反应：H++OH-=H2O
C．在硫酸铜溶液中加入过量氢氧化钡溶液：Ba2++SO42-=BaSO4↓
D．碳酸钙中加入盐酸：CO32-+2H+=CO2↑+H2O
题型：选择题
根据句意，从方框中选择合适的单词或短语，并用其适当形式完成句子。（5分）
小题1:Designs for the new gym will be in the library.
小题2:Jim ______________ his father. They are both clever and a bit quiet.
小题3:I was waiting for the school bus but it didn’t come. Then I ______________ it was Saturday.
小题4:Beijing is cold this time of year. You need to ______________ warm clothes if you go there.
小题5:Don’t forget to _______________ the door if you are the last one to leave the classroom.
A lion has a mane.
A .
An .
A .