The Great Wall is __________ tourist attraction that millions of people pour in every year.
| A．so well-known a | B．a so well-known |
| C．such well-known a | D．a such well-known |
Tu Youyou，the 81yearold doctor，has become the first scientist on the Chinese mainland ________a Lasker Award.
| A．winning |
| B．won |
| C．to win |
| D．win |
－Do you have enough to ________the cost of your board at school?
－Oh，yes，enough and to spare.
| A．cover |
| B．spend |
| C．fill |
| D．spare |
I want to sell the house，but ________I can't bear the thought of moving.
| A．in other words |
| B．on the other hand |
| C．for one thing |
| D．as a matter of fact |
The population of this city，forty percent of which________，________20% in the last three years.
| A．are Germans；has risen by |
| B．are Germans；has fallen to |
| C．is Germans；have increased to |
| D．is Germans；have been reduced by |
After the experiment the plant is ________ it was before.
| A．five times taller than |
| B．taller five times than |
| C．as tall as five times |
| D．the height of five times |