Bad habits, ______ formed(形成), are difficult to give up.
| A．and | B．once | C．for | D．but |
If you have health examinations______, any disease you may have can be discovered early and successful treatment is more likely,
| A．approximately | B．regularly | C．gradually | D．roughly |
It’s hard to tell real Jingdezhen vases, and it’s a little more difficult for the untrained shopper to______.
| A．dismiss | B．distinguish | C．seek | D．shelter |
The Korean government plans to import Chinese cabbage from China, as the recent rainstorm has______ the price.
| A．driven up | B．taken up | C．set up | D．looked up |
You should be more confident in______ situation is challenging you.
| A．wherever | B．whenever | C．however | D．whatever |
The Chinese mainlanders from selected cities are allowed to visit Taiwan______ individual tourists.
| A．within | B．as | C．for | D．like |