【单选题】Sometimes I take a No.28 bus to work.
【单选题】下列有关 PCR 技术的叙述,不正确的是( )
【单选题】下列有关 PCR 技术的叙述,不正确的是
【单选题】-Does your father go to work by car every day? -No, he sometimes takes bus.
【简答题】4 A. Raul
takes sometimes the bus to work. B. Raul
often takes the bus to work. C. Raul
rarely takes the bus to work.
【单选题】Sometimes I take a No. 31 bus to work.
【单选题】下列关于 PCR技术叙述不正确的是
A.
PCR技术 中的解旋方式与体内 DNA复制不相同
B.
PCR技术中所用的DNA聚合酶具有耐高温的特点
C.
PCR技术中以核糖核苷酸为原料,以指数方式扩增
【单选题】*---Does your mother go to work by bus every day? ---No, she sometimes takes bus.