.Being exposed for a long time________strong sunlight might seriously damage your skin.
A. in B. under C. to D, over
After being discovered by Dutch explorers in 1606，the eastern half of Australiaby the British in 1770．
| A．was claimed | B．claimed | C．was claiming | D．has been claimed |
Women prefer to buy food which has already been preparedit reaches the market．
| A．after | B．for | C．before | D．until |
Scientific surveys conducted during the climbs that Mount Huandoy in Peru
6395 meters high.
| A．shown；is | B．showed；was | C．shows；was | D．showed；is |
everybody enjoys fresh cut flowers around his house．few people know how to keep them for as long as possible．
| A．Because | B．Since | C．While | D．If |
Polar bears liveon sea ice，which they use as a platform for hunting seals
| A．most | B．almost | C．nearly | D．mostly |