By saying that "the problems of mechanizing some areas are not only cultural in nature", the author means______.
A. mechanization is not yet introduced in some areas for economic reasons
B. human and animal labour in some areas are less expensive
C. culture is not a factor in obstacling the introduction of mechanization
D. different kinds of mechanized fanning tools are used in different cultures
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Exposure to asbestos fibres is harmful to people' s health ______.
A. so the use of asbestos is limited
B. but asbestos will continue to be used for a long time to come
C. so other new kinds of materials are under development
D. but they will not be so when ventilation devices are used
A) rings B) cycles C) circles D) rounds
A. rings
B. cycles
C. circles
D. rounds
A) mode B) way C) form D) fashion
A. mode
B. way
C. form
D. fashion
A) times above B) time C) times in D) times
A. times above
B. time
C. times in
D. times
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