【简答题】_________能够通过调节转录起始复合物的组装提高基因的转录效率。
【单选题】Our journey was slow because the train stopped ______ at different villages.
【单选题】Our journey was very slow because the train stopped constantly at differentvillages.
【单选题】Because of the complexity of our modern machine, we need our workers ______.
C.
to have specified training
【简答题】Our journey was slow because the train stopped ________ at different villages. A) unceasingly B) gradually C) continuously D) continually
【单选题】下列关于增强子的说法,错误的是?
A.
增强子的转录激活作用受到序列颠倒、移位的影响
B.
增强子能够通过调节转录起始复合物的组装提高基因的转录效率
【单选题】下列关于增强子的说法,错误的是?
A.
增强子能够通过调节转录起始复合物的组装提高基因的转录效率
B.
增强子的转录激活作用受到序列颠倒、移位的影响
【单选题】One of our tasks in business schools is to train people to manage the ________distributed companies.
【简答题】患者,男,42岁,公务员。 主诉:右上前牙变色,牙间隙变宽2年余。 现病史:近2年来发现右上前牙逐渐变为灰黄色,牙间隙变宽,除影响美观外无任何不适。 既往史:20年前打篮球时上前牙被撞击,当时遇冷热刺激敏感,咬食物疼痛,经医生检查未作治疗,建议观察,1周后好转,一直无其他症状。 否认有其他全身系统性疾病、传染病及药物过敏史。 检查:11牙冠完整,无缺损,呈灰黄色,发暗无光泽(图4-8-3)。根尖牙...