A Christmas tree is ______ sign that can only be understood as far as ______ certain cultural understanding is concerned.
| A．the, / | B．a, the | C．a, a | D．the, a |
Too high house prices can be brought under control， ___the authorities introduce a series
of regulatory policies．
| A．even if | B．as if | C．so that | D．provided that |
．Low-carbon lifestyle is of great benefit to improve the world environment． can be
enjoyed from it until you have a deep understanding of it，however．
| A．Something | B．Nothing | C．Few | D．Much |
— You may find the key to the maths problem on page 107.
— Ah, it’s so simple. I wonder why I ______ of that.
| A．hadn’t thought | B．haven’t thought |
| C．didn’t think | D．wasn’t thinking |
For professional athletes, ________ to the Olympics means that they have a chance to enter the history books.
| A．access | B．attachment | C．appeal | D．approach |
— Is that the country clinic you often refer to?
— Right，just the one ______ you know my father used to work for 10 years
| A．that | B．which | C．where | D．as |