______ interesting the book is! I want to buy one, too.
| A．How | B．What | C．How an | D．What an |
The red suitcase is expensive ______it’s made of leather.
| A．when | B．if |
| C．because | D．though |
Could you show me how to ________ this new recorder?
| A．operate | B．listen |
| C．look | D．learn |
Some people think that CD-ROMs will soon be _________ books.
| A．as more popular as | B．the most popular than |
| C．so popular as | D．more popular than |
I didn’t _____ you were going to leave_____ 3 o’clock.
| A．find; at | B．realize; until |
| C．remember; before | D．tell; after |
A human ______ can do some things better than a computer, for example, creating new ideas.
| A．head | B．body |
| C．brain | D．arm |