喷射泵吸水胶管中段内层变形脱落应（）。
A、更换此胶管
B、疏通阻塞部分
C、维修重复使用
D、清除阻塞胶皮
参考答案：C
英国国教 （ ）
A．在玛丽一世时一度恢复
B．就是天主教
C．是英国民族教会
D．必须服从罗马教皇
— Jack took the 8:30 bus to Guangzhou this morning.
— Really? He _____ 8:20 Express. It is much more comfortable and faster to travel by train. [ ]
A. could have taken
B. would have taken
C. need have taken
D. must have taken
