Theauthorgivessubstancetothepassagethroughtheuseof___________.
A.interviews with authorities in the field of water controls B.opinion and personal observations C.definitions which clarify important terms D.strong argument and persuasion正确答案B
Theauthorgivessubstancetothepassagethroughtheuseof___________.
A.interviews with authorities in the field of water controls B.opinion and personal observations C.definitions which clarify important terms D.strong argument and persuasion正确答案B
