It is shown in surveys that academic plagiarism______. A．has been an acceptable practice in society B．has become more rampant among students C．was a phenomenon prevalent at 99 colleges D．was popular in schools when first measured
A. A．has B.has C.was D.was
【参考答案】
B 根据第一段中的“Surveysshowthatcheatinginschool…hassoared…”，以及......