Depression is the leading cause of suicide, __    __ in turn is the third leading cause of death among 15 to 24 year olds in the United States．

A．who

B．which

C．that

D．what

表浅淋巴结触诊方法与顺序的叙述，不正确的是

A．检查者指腹平放于被检查部位进行深压触诊

B．头部淋巴结检查顺序为：耳前、耳后、枕部、颌下、颏下

C．颈部淋巴结检查顺序为：颈前、颈后、锁骨上

D．上肢顺序为：腋窝、滑车上

E．下肢顺序为：腹股沟、胭窝