油罐在收油时，（）会造成油罐胀裂。
A、进油量大于允许呼吸量
B、泡沫发生器未打开
C、机械呼吸阀失灵
D、液压呼吸阀油位过高
参考答案：A, C, D
---I missed the beginning of ________ cartoon The Lion King.
---What a pity! You should leave school half _______ hour earlier.
A．a, an
B．the, a
C．the, an
D．an, the
巴比伦之囚
