Teachers have to constantly update their knowledge in order to maintain their professional ________.
(2011·江苏，27)
| A．consequence | B．independence |
| C．competence | D．intelligence |
Cycling is highly _____ to people’s health and the environment.
| A．fashionable | B．beneficial | C．changeable | D．suitable |
I recognize her __I met her at the airport, although we haven’t seen each other for ten years.
| A．the moment | B．in the moment |
| C．for the moment | D．at the moment |
Unless ________ to speak, you should remain silent at the conference.
| A．invited | B．inviting | C．being invited | D．having invited |
_____ in Haikou for five years, he is not used to the weather in his hometown.
| A．Live | B．To live | C．Having lived | D．Have lived |
________ we know, the moon goes around the sun.
| A．As long as | B．As far as | C．As much as | D．As soon as |