一失聪患者经检查耳的结构完整无损，下列哪些原因可能引起其失聪 [ ]
A．咽喉发炎
B．咽鼓管张开
C．位听神经受损
D．听觉中枢受损
CD
The seaside here draws a lot of tourists every summer. Warm sunshine and soft sands make ________ it is .
A．what
B．which
C．how
D．Where
