Although he knew little about the large amount of work done in the field, he succeeded ________ other more well - informed experimenters failed.
| A．which | B．that | C．what | D．where |
14．The forest guards often find campfires that have not been________completely.
| A．turned down | B．broken down | C．put out | D．put off |
13．Many medical scientists are racing__________time to find a cure for H1N1 as soon as possible.
| A．on | B．against | C．for | D．In |
12．Alice is kind, careful, energetic and has much experience of looking after children. In a word, she is very_______.
| A．comfortable | B．flexible | C．available | D．Reliable |
11．--- Where did Mary’s parents 
buy the beautiful souvenir?
--- It was in the same village_________they spent their holidays last year.
| A．that | B．when | C．as | D．Where |
10．____by the beauty of the piano music, the audience almost forgot to applaud when the pianist finally finished it.
| A．Having attracted | B．Attracted | C．To be attracted | D．Be attracted |