【单选题】--- How easy is it to find a taxi in this city? ---Simply _______ your hand, and a taxi appears in no time.
【单选题】转录因子是
D.
保护DNA免受核酸内切酶降解的DNA结合蛋白
【简答题】许多转录因子是细胞原癌基因的产物,为什么突变的转录因子可能导致癌变?
【单选题】Taxi is one of the most common means of city transport, so the increase of taxi _______ in Hangzhou has led to much public concern.