第一节：单项填空（共15小题，每小题1分，满分15分）
21. —What do you think of the five doll mascots for the 2008 Olympic Games?
—______, they are lovely, but I really do not know what they mean.
| A．To tell the truth | B．I’m afraid | C．Unfortunately | D．It’s a pity |
Allen and I are in the same history class, but her assignment differs _____________ mine.
| A．with | B．from | C．against | D．To |
We must __________ that the experiment is controlled as rigidly as possible.
| A．propose | B．secure | C．ensure | D．Issue |
The bank has _________ some property on which to constructed.
| A．paid | B．picked up | C．purchased | D．Invested |
The island in the middle of the lake _____________ the beauty of the lake.
| A．adds up to | B．adds to | C．adds up | D．adds |
It is important for us to employ a word or phrase according to the ________ in language studies.
| A．situation | B．expression | C．comprehension | D．Translation |