题目内容：
EventhoughtheBritishgovernmentisfirmincontrollingmatheducationstandardsathighschool,__________. A．itseffortsmaygainlittleachievements
B．pupilsandteachersmaynotacceptthechallenge
C．officialsarenotSureofthesuccessoftheirwork
D．itwilltakeseveralyearsbeforefulleffectscanbeseen
参考答案：
答案解析：