22. _____ computer has been proved to be _____ important aid in classroom teaching.
| A．The; an | B．The; the | C．A; the | D．A; / |
Although John was the eldest in the family, he always let his sister _____ charge of the house.
| A．take | B．hold | C．make | D．get |
The island where these rare birdsnest has been declared a _____.
| A．observation | B．reservation | C．preservation | D．conservation |
Kate's ambition to become a nurse _____ from a desire to help others.
| A．prompted | B．promoted | C．programmed | D．proceeded |
Dress warmly, _____ you'll catch cold.
| A．on the contrary | B．or rather | C．or else | D．in no way |
This book gives a brief _____ of the history of the castle and details of the art collection in the main hall.
| A．outline | B．reference | C．article | D．outlook |