I found the island a wonderful place for our experiments _______ the hot weather.
| A．besides | B．except for |
| C．except | D．except that |
American Indians ______ about five percent of the U.S. population.
| A．fill up | B．bring up |
| C．set up | D．make up |
The problem of global warming is serious. ______, the sea levels have risen a little.
| A．As a result | B．On the contrary |
| C．In particular | D．In other words |
At the beginning of class, the noise of desks ______ could be heard outside the classroom.
| A．opened and closed | B．to be opened and closed |
| C．being opened and closed | D．to open and close |
Yesterday morning he got up earlier than ______, for it was not a(n) ______ day.
| A．common; usual | B．common; ordinary |
| C．usual; normal | D．usual; ordinary |
The medical reform in that 
country turns out to be ______ failure, but as we know, success often comes after ______ failure.
| A．a; the | B．a; 不填 | C．a; a | D．不填; 不填 |