牡丹皮药材粉末可见晶体是()
A.簇晶
B.方晶
C.砂晶
D.针晶
E.柱晶
参考答案:A
单词NAME的四个字母中,是中心对称图形的是( )
A.N
B.A
C.M
D.E
We must be strict _________ our work and strict _________ ourselves.
A.with; in
B.in; with
C.in; in
D.with; with