B737—800（五人配置）飞机紧急撤离时，负责确认和打开应急灯的乘务员是SS4。（）
参考答案：错
舍格伦综合征伴发的自身免疫性疾病有_________、_________、_________及__________等。
Though the twins look alike, they ____ in many aspects, especially in hobbies and personality.
A．range
B．change
C．choose
D．differ
