第9题: [填空题]If the measure of vaccine should fail, the only backup would be ______. 参考答案:antiviral drugs 答案解析:见小标题Mitigation measures第一段"If either aspect of that process should fail,the only backup would be an
According to the speaker, it is foolish and childish for a filmmaker to mix his preconceptions with objective truth when he produces a documentary. 参考答案:错 答案解析:[解析] A documentary is an arrangement of non-fictional films,structured to support the preexistin