Rising evidence suggests that the use of the vaccines(疫苗)will be effective to the spread of common cold.
| A．interrupt | B．threaten | C．contribute | D．abandon |
We should keep ourselves_______ of the latest development of science and technology.
| A．informing | B．informed | C．to inform | D．inform |
To those_______ in martial arts(武术), the period from 1972 to 1975 is often said_______ the Bruce Lee era.
| A．involving; being | B．to involve; to be | C．involved; to be | D．involve; being |
Though_______ money, his parents managed to send him to university.
| A．lacked | B．lacking of | C．lacking in | D．lacked in |
After he retired from office, Rogers_______ painting for a while, but soon lost interest.
| A．took up | B．saved up | C．kept up | D．drew up |
The first visit to the Great Wall with my parents gave me a deep_______.
| A．effect | B．impression | C．encouragement | D．satisfaction |