---What attracts people to California is its pleasant climate and relaxed lifestyle.
---This is ___ each year a great number of people from all over the world try to ___ to California.
| A．how; immigrate | B．Why; immigrate | C．because; remove | D．why; remove |
An artist who was recently traveling on a ferry to the southern island discovered __________ a long lost antique Greek vase.
| A．at random |
| B．by chance |
| C．in turn |
| D．on occasion |
If we leave right away，__________ we'll arrive on time.
| A．hopefully |
| B．curiously |
| C．occasionally |
| D．gradually |
Barker refused to answer more questions，__________ that he had already said too much.
| A．adding |
| B．added |
| C．added to |
| D．added up |
That year his total income, with his reward __________12，000 yuan.
| A．added up to |
| B．added to |
| C．added |
| D．adds up to |
Nowadays searching information on the Internet is a piece of cake. The __________ is how you can tell if the information you get is beneficial or not.
| A．characteristic |
| B．competition |
| C．challenge |
| D．confusion |