细菌所具有的细胞器是（）。
A.线粒体
B.高尔基体
C.中介体
D.内质网
E.核蛋白体
参考答案：E
— How is Emmy?
— I have no idea. She hasn't written to me ______ we met last time. [ ]
A. since
B. while
C. as
D. before
紫外线空气消毒器
