为减少钻井液滤液侵入油层，在碳酸岩中钻井液高温高压失水量应控制在（）mL以内。
A、15
B、20
C、30
D、40
参考答案：B
(2014·山东省实验中学二模)He is no fool at all，________，he is the smartest boy I have ever seen.
A．in addition
B．in fact
C．in particular
D．in general
State and explain the rules that govern the interpretation of statutes in Botswana. (10 marks)
