第36题: [单项选择]One of the requirements for a fire is that the material ______ to its burning temperature. A. be heated B. is heated C. would be heated D. to heated 参考答案:A 答案解析:[考点] 考查虚拟语气。 在表示建议、要求、命令、请示等含义的名词引导的表语从句和同位语从句中,要用虚拟语气,这类名词包括requirement,idea,suggestion,decisi