单项选择题
Furnishings for recreational facilities should（）include a bookcase and facilities for reading,writing and,where practicable,games.
A.as a minimum B.as a maximum C.as a rule D.as a result
单项选择题 The velocity of the wind，its steady direction，and the amount of time it has blown determines a wind driven current’s（）.
单项选择题 When crossing a front,isobars tend to（）.
单项选择题 Details of coast radio stations and radar stations can be found in（）.
