自然铜煅淬生成的是()
A.枯矾
B.煅炉甘石
C.石决明
D.醋酸亚铁
E.朱砂
参考答案:D
观察下列数字的排列规律,然后填入适当的数:3,﹣7,11,﹣15,19,﹣23,( ),( ).
I think Miss Yang wasn't _____ to the accident happening in your office. [ ]
A. used
B. related
C. considered
D. said