Mr. Duncan raised an unnecessary question he then failed to find an answer.
| A．to which | B．for which | C．with which | D．by which |
Nicolaus Copernicus’ discovery about the universe is ______, which ______later achievements in astronomy science.
| A．ambitious; gave birth to | B．enthusiastic; resulted in |
| C．obvious; resulted in | D．revolutionary; led to |
We the Chinese are not to be ______, ________the situation is.
| A．beaten; however disastrous | B．defeated; whatever disastrous |
| C．beaten; whatever disastrous | D．lost; however disastrous |
People should be cautious ______their personal information when surfing the Internet so as to prevent certain computer viruses ______ it.
| A．about; to steal | B．of; stealing | C．with; to steal | D．to; from stealing |
The local police were______ by their authorities to _____ the situation as soon as possible.
| A．said to; control | B．ordered; manage |
| C．instructed; handle | D．told; hold |
Only when people have enough to eat and plenty to wear _______ to talk about environmental protection.
| A．it makes sense | B．does it make sense |
| C．that it makes sense | D．do they make sense |