单萜类的是( )
A．龙胆苦苷B．莪术二酮C．穿心莲内酯D．紫杉醇E．薄荷醇
参考答案：E
解析：[知识点] 薄荷主成分化合物类型
It’s so nice to hear from her. __________, we last met more than thirty years ago.
A．What’s more
B．That is to say
C．In other words
D．Believe it or not
国家法定计量单位，质量“千克”用字母（）表示。
