No one could tell us anything about the______strangers.
A. conscious
B. mysterious
C. serious
D. previous
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In the second paragraph, the author suggests that "economists" would______.
A. plan the economy through yearly forecasts
B. fail to consider the influence of technological innovation
C. value the economic contribution of farm animals
D. consult the national commission on the economy
Cowboys enjoyed themselves because______.
A. they liked their way of life
B. they made a lot of money
C. they had a very difficult job
D. they were heroes in movies
What is the author's attitude toward changes brought on by technological innovations？
A. He is excited about them.
B. He accepts them as natural.
C. He is disturbed by them.
D. He questions their usefulness.
The mountain place is beautiful, but______the working conditions, it is terrible.
A. when mentioned
B. when it comes to
C. when it is said
D. when it dies to
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