【单选题】You went to the USA, __ ? [ ]
【单选题】神经细胞阈电位时,通透性突然增大的离子是
【单选题】听力原文:You didn't do well in the test. What's the matter? (4)
B.
I didn't check the answer.
【单选题】I wonder why you didn’t do as ________ and it’s the third time you have done this.
【单选题】阈电位时神经细胞膜对其通透性突然增大的离子是
【判断题】练习的时候要尝试被抱尤其是突然背后被袭的感觉
【单选题】—Did you go to the zoo last Sunday? —____________. [ ]
【单选题】阈电位时,神经细胞对其通透性突然增大的离子
【单选题】— you go to the beach last week? —No, we [ ]