下列不属于胆囊息肉样病变的是（）。
A.结石
B.胆固醇息肉
C.腺瘤样增生
D.腺瘤
E.腺癌
参考答案：A
要做到洗水闭路循环，需做到哪几点？
Ann was _______ a good mood and kept ______ jokes to us. [ ]
A. in, to tell
B. in, telling
C. on, to tell
D. on, telling
