第30题: [单项选择]Equipment and technology upgrades do not ______ solve the problem either. A. virtually B. rarely C. necessarily D. practically 参考答案:C 答案解析:[解析] 副词搭配题。necessarily意为“必要地;必定地,必然地”,符合句意。virtually意为“事实上,几乎;实质上”;rarely意为“很少地,难得,罕有地”;practically意