．The development of industry has been________gradual process throughout________human existence，from stone tools to modern technology. (2012·浙江，2)
| A．/；the | B．the；a |
| C．a；/ | D．a；a |
We may find that learning a foreign language does not have to be ______learning our mother tongue, but can in fact be as easy.
| A．twice harder as | B．as twice hard as | C．twice as hard as | D．as twice hard |
At the seventh International Ballet Competitions , Fernando Bujones won the first gold medal ever to an American male dancer .
| A．awarded | B．to be awarded | C．being awarded | D．should be awarded |
Colors like red _______ a sense of energy and strength.
| A．exchange | B．convey | C．confuse | D．absorb |
The number 911 is _____ special number, _______, I think, that will be remembered by the Americans forever.
| A．a, what | B．the ,it | C．a ,which | D．a, one |
The woman pulled her hat low down ____ her eyes in order not to be recognized by the angry crowds.
| A．under | B．over | C．below | D．beyond |