常温下，可以用铝或铁制容器贮存浓H2SO4，下列叙述正确的是( )
| A．常温下，浓H2SO4与铁、铝不反应 |
| B．贮存浓H2SO4的器皿可敞口，因为浓H2SO4难挥发 |
| C．贮存浓H2SO4的容器应远离热源 |
| D．常温下，浓H2SO4与氧化铝、氧化铁不能反应 |
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 |