He is known _____ a scientist and famous _____ his research on rice.
| A．for; as | B．for; for | C．as; for | D．as; as |
It is my ______to check that all doors and windows are locked after everybody leaves .
| A．doubt | B．poster | C．responsibility | D．evidence |
We all know that the Great Britain will ______the Olympic Games in 2012.
| A．charge | B．volunteer | C．admit | D．host |
We drew this conclusion on the _______of research and experments .
| A．motto | B．glory | C．basis | D．style |
A new ______bus service to Tianjin Airport started to operate two months ago .
| A．regular | B．physical | C．usual | D．former |
The Olympic winner will receive a gold _____as an award .
| A．vase | B．medal | C．castle | D．jewel |