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A. complete
B. do
C. Fill
D. make
爆破基坑应根据土壤性质、药量、爆破方法等规定危险区。石坑危险区半径应为()。
A. 500m
B. 400m
C. 200m
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A. deny
B. refuse
C. insist
D. hide
According to the passage， authors who write to inform. want to________.
A. provide information about a certain topic
B. make the reader laugh，cry，or scream
C. convince the reader to do something
D. invite the reader to critique their work
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