It is generally believed that Watson and Crick’s discovery about DNA was ____ beginning of _____ enormous advances in _____ field of genetics.
| A．the, the, the | B．/, /, the |
| C．the, /, the | D．the, the, a |
Why don’t you bring to his attentionthatyooaret00illtogo On working?
| A．One | B．it | C．that | D．this |
Though Mark wasn’t well educated，his common guided him t11rough a life．
| A．sense | B．ground | C．place | D．practice |
一Can you bring me the bill．please?
一，sir, Just a minute．
| A．I think so | B．Not really | C．Of course | D．Forget it |
you must remain calm．
| A．Whatever you may be frightened |
| B．However frightened you may be |
| C．Whatever frightened you may be |
| D．However you may be frightened |
The question we should call in a specialist now was raised by the family doctor.
| A．which | B．who | C．whether | D．when |