第30题: [单项选择]Educators are now recommending that reasoning skills ______ in the class room since recent tests indicate that many teachers in the past have ignored these skills. A. are emphasized B. must be emphasized C. would be emphasized D. should be emphasized 参考答案:D 答案解析:recommend引导从句,从句需用虚拟语气,结构为(should)+动词原形。