下列反应中，既属于氧化还原反应，同时又是吸热反应的是
| A．灼热的炭与CO2反应 | B．H2与O2的燃烧反应 |
| C．铝与稀盐酸反应 | D．Ba(OH)2·8H2O与NH4Cl反应 |
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 |
What I need is_____ book that contains ______ABC of oil painting.
| A．a; 不填 | B．the; 不填 | C．the; an | D．a ; the |
Jenny nearly missed the flight______ doing too much shopping.
| A．as a result of | B．on top of | C．in front of | D．in need of |
The CDs are on sale! Buy one and you get ______ completely free.
| A．other | B．others | C．one | D．ones ks |