The tool for tattoo-making penetrates the skin ______.
A. by one million meters
B. by one centimeter
C. by one millimeter
D. by a million millimeters
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【B6】
A. took
B. brought
C. fetched
D. sent
【B14】
A. however
B. therefore
C. nevertheless
D. whereupon
【B12】
A. in
B. on
C. by
D. at
【B3】
A. find out
B. learn
C. discover
D. work out