Finding information in today’s world is easy. The ______ is how you can tell if the information you get is useful or not.
| A．knowledge | B．ability |
| C．competition | D．challenge |
It is not __________ for me to borrow all the books from the librarynow because I can only borrow one each time.
| A．difficult | B．convenient |
| C．available | D．important |
It was not until I went through his paper that __________ what rapidprogress he had made in writing.
| A．had I found | B．did I find |
| C．I had found | D．I found |
We did have a quarrel about money last night, but now we havealready __________.
| A．taken up | B．made up |
| C．put up | D．brought up |
When __________ whether Chinese could develop their own missiles,
Qian Xuesen said Chinese could do anything that foreigners coulddo.
| A．asked | B．asking |
| C．to asked | D．having asked |
The girls burst out laughing when I began to make a speech, —__________，of course, made me feel embarrassed.
| A．which | B．what |
| C．that | D．why |