【判断题】胰岛B细胞分泌高血糖素,A细胞分泌胰岛素
【判断题】胰岛的A细胞分泌胰岛素,B细胞分泌高血糖素。()
【单选题】They ______ on the program for almost one week before I joined them, and now we _____on it as no good results have come out so far.
A.
had been working; are still working
B.
had worked; were still working
C.
have been working; have worked
D.
have worked; are still working
【判断题】在南北两极地区,气温很低,所以没有任何生物存在。( )
【判断题】胰岛素由胰岛 B细胞 分泌, 胰高血糖素由胰岛A细胞分泌
【简答题】They _______ on the program for almost one week before I joined them,and now we _______ it as no good results have come out so far. A.had been working; are still working B.had worked; were still wor...
【判断题】胰岛A细胞分泌高血糖素,B细胞分泌胰岛素。
【判断题】胰岛的A细胞分泌高血糖素,B细胞分泌胰岛素。