The first paragraph of this passage is mainly about______.
A. the danger of making experiments
B. the importance of habit in the survival of mankind
C. the food our distant ancestors ate
D. the behavior. of younger generations
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This year we' 11 produce ______ steel as we did last year.
A. three times as much
B. as three times much
C. as much three times
D. three times much as
惩办是在宽大的前提下进行的。()
A. 正确
B. 错误
Since I was a stranger there, I had no one to______.
A. turn up
B. turn on
C. turn to
D. turn down
专门机关与广大群众相结合的方针贯穿于公安工作的各个方面。()
A. 正确
B. 错误