一个三位小数精确到百分位是100.90。这个三位小数最小和最大分别是多少?[ ]
A. 99.899
B.100.999
C.100.895
D.100.904
答案:C
To protect the environment, we mustn't ____ gum. [ ]
A. have
B. eat
C. chew
D. chewed
与神志活动关系最密切的脏是()
A.肝
B.肺
C.肾
D.脾
E.心