57.A.common B.the same C.changeable D.different
56.A.beautiful B.unlimited C.rare D.valuable
54. with the size of the whole earth, the biggest ocean does not seem big at all.
A.Compare B.When comparing
C.Comparing D.When compared
53.Books of this kind well.
A.sell B.sells C.are sold D.is sold
52.Our bodies are strengthened by taking exercise. , our minds are developed by learning.
A.Probably B.Likely C.Similarly D.Generally
51.The teacher speaks as clearly as possible in order to make himself .
A.understand B.understood C.to understand D.understanding
50.His best-known work that is all praise can be seen in the museum.
A.without B.beyond C.with D.within
49. the sudden change of weather, we still managed to finish our task according to the original plan.
A.Despite B.Even if C.Though D.Even though
48. can you expect to get a pay rise.
A.With hard work B.Although work hard
C.Only with hard work D.Now that you work hard