21. The word obsolete most probably means_______.
A. weak B. old
C. new D. out of date
22. The author is anxious about_______.
A. his people no longer taking the lead in industrial innovation
B. his country no longer being a wealthy nation
C. his people forgetting to raise their productivity
D. his country falling behind other industrial nations
23. According to the author, in his country_______..
A. the proportion of labor force to capital investment is quite low
B. the growth rate of labor force should be greater than that of capital investment
C. the productivity increases should be achieved by the increases of labor force
D. capital investment should have increased more rapidly than labor force
24. So far as the influence on society is concerned, _______.
A. robot technology seems to be much more promising than computer technology
B. computer technology has less to offer than robot technology
C. robot technology can be compared with computer technology
D. robot technology cannot be compared with computer technology
25. The purpose of the author in writing this passage is to show that_______.
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