下列反应的离子方程式，书写错误的是
| A．氢氧化钡跟硫酸铜溶液的反应 Ba2++2OH-+Cu2++SO42-=BaSO4↓+Cu（OH）2↓ |
| B．用稀硫酸清除铁锈 Fe2O3+6H+=2Fe3++3H2O |
| C．食盐水中滴加硝酸银溶液 Cl-+Ag+=AgCl↓ |
| D．氢氧化铁与盐酸反应 OH-+H+=H2O |
—— Do you mind my opening the window? It’s a bit hot in here.
—— ______ , as a matter of fact
| A．Go ahead | B．Yes, my pleasure |
C．Yes, I do | D．Come on |
It’s high time you had your hair cut ; it’s getting _______ . 
| A．too much long | B．much too long |
C．long too much | D．too long much |
My friend showed me round the town, ______ was very kind of him. 
| A．which | B．that | C．where | D．it |
They use computers to keep the traffic _______ smoothly.
| A．being run | B．run | C．to run | D．running |
If you leave the club, you will not be_____back in .
| A．received | B．admitted | C．turned | D．moved |