Why couldn't the fire spread to the south?
A.Because there was a lake there.
B.Because there was a river there.
C.Because there were a lot of firemen there.
D.Because there was a path there.
第2题
(68~69题共用备选答案)
A.生物碱
B.酸性物质
C.无机盐
D.糖类、氨基酸
E.挥发油
辛味药多含有的成分是
第7题
甘味药所含的主要成分是()。
A、挥发油
B、皂苷
C、有机酸和鞣质
D、生物碱
E、氨基酸和糖类
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!