历史模件HM的作用是（）。
A、便于状态分析
B、贮存大量的信息
C、提供大量的存贮器
D、提高调节阀调节精度
参考答案：A, C, D
John had to have his house repaired because it ________ in the earthquake.[ ]
A．damaged
B．was being damaged
C．had damaged
D．had been damaged
宅男们向往的日本动漫圣地是那里（）
