第12题: [单项选择]Gas does {{U}}accumulate{{/U}} in the mines around here. A. increase B. spread C. collect D. grow 参考答案:C 答案解析:accumulate:积累,积聚。collect:收集:积聚。Dust collected on the furniture.家具上积了灰尘。increase:增加。Japan's industria
第13题: [单项选择]1,2,6,16,44,()。 A. 66 B. 84 C. 88 D. 120 参考答案:D 答案解析: