【简答题】The text indicates that the Canadian airport. officials seem to have _________ . [ A] taken effective measures to solve the car-theft problem [ B] overestimated the seriousness of the car-theft proble...
【单选题】The attitude that a scientist ______ applying a kind of food colorant scarcely indicates that she is ______ , for she may simply carry the patent rights to another colorant which may replace the first...