已知：2H2(g)+O2(g)＝2H2O (1)，△H＝-571.6 kJ·mol-1，下列叙述正确的是（ ）
| A．2mol H2完全燃烧生成水时放出571.6 kJ的热量 |
| B．1mol 液态水完全分解生成H2和O2时放出285.8kJ的热量 |
| C．2个氢分子和1个氧分子完全燃烧生成液态水时放出571.6 kJ的热量 |
D．上述热化学方程式可表示为H2(g)+ 1/2O2(g)＝H 2O (1)，△H＝-285.8 kJ·mol-1 |
—— 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 |