只有生物性因素才能引起疾病。
参考答案：错
The lawyer seldom wears anything other than a suit __________the season.
A．whatever
B．wherever
C．whenever
D．however
A320飞机客舱可放置担架的座位排数是（）
A、24/25/26
B、25/26/27
C、26/27/28
D、27/28/29
