Of the existing theories about the origin of carnival ,people are not sure which theo
A.正确
B.错误
A、正确
B、错误
A、is
B、are existing
C、exists
D、exist
What is the best title of the passage?
A.Problems Existing in the American States.
B.Working Conditions for VDTs Operators.
C.Health Dangers to Workers Using VDTs.
D.How to Protect the Pregnant Women.
A.Conversion
B.Abbreviation
C.Eponyms
D.Blending
A.错误
B.正确
What do we learn about existing medical knowledge and skills in the world?
A.They are adequate.
B.They have not been updated.
C.They are not equally distributed.
D.They have benefited most of the blind.
From the last three paragraphs we know that ______.
A.lengthening the existing 53-kilometer subway is among the 50 large projects
B.the length of the subway will be up to 135.25 kilometers in 2005
C.a 40.5-meter-long line will be added to Beijing's first light railway
D.a 70-meter-wide green belt will supply us with enough water