根茎类药含药屑、杂质应小于（）
A.1％
B.2％
C.3％
D.4％
E.5％
参考答案：B
He came to my class every week, but his attitude _______he was not really interested in the subject.
A．expressed
B．described
C．explained
D．suggested
被誉为“真正的中国民族艺术”的是( )。
A．江西景德镇瓷器
B．湖南长沙湘绣
C．福建脱胎漆器
D．芜湖铁画
