题目

完形填空 I was on vacation with my husband,my brother,his wife and daughter.We were not1with the area and got on a bus,thinking it would be a nice way to see the downtown's old town area.Well,2talking with the bus driver,we didn't find that we were.on the neighborhood route（线路）which3school children and delivers people to various4places.That was a route of over about two hours.That was a surprise and a concern because we5our vehicle in a6parking area and it was going to end. We shared this with the bus driver only to let her know we were not from the area and7for getting on her bus 发现并提取出维生素B1的人是 [　　] A．荷兰医生艾克曼 B．波兰科学家芬克 C．英国细菌学家弗莱明 D．美国科学家科恩