三次站夜间不守班，对夜间出现的天气现象，则（）。
参考答案：要尽量判断记载
Mary made coffee————————her guests were finishing their meal
A so that B although C while D as if
AFP是
A．异种抗原
B．同种异型抗原
C．异嗜性抗原
D．自身抗原
E．肿瘤相关抗原
