题目

He bought a book that could glee him much knowledge and ______ could help him to kill the time． A．that            B．where      C．which     D．there 答案：C 可燃物在           的空间内，         地燃烧，就会在短时间内聚积大量的热，使气体的体积迅速膨胀而引起                   。