【单选题】Look! Serveal __ are watching a group of ___ eating grass on the hill.
【简答题】核酸一级结构是 ___, 也称 ___ 序列。其连接键是 ______, 多核苷酸链的书写方向是 ___ 。
【判断题】非胰岛素依赖型、饮食控制无效的糖尿病肥胖患者应选用二甲双胍。
【单选题】Never_the Germans_such a breakfast.
【单选题】There are four ___________ and two _________ in the group. A. Japanese , Germans B. Japaneses, Germen, C. Japaneses, Germans
【判断题】非胰岛素依赖型、饮食控制无效的糖尿病肥胖患者应选用二甲双胍。
【单选题】Some ______ and ______ were talking in the restaurant.
【单选题】A group of _____ are talking with two _____. [ ]
【单选题】They are from . They’re .
【简答题】多核苷酸链的两端是____和____,其书写方向是____。