《中国药典》2000年版一部规定，麻黄中生物碱的含量测定的采用
A．桔梗B．党参C．木香D．川木香E．白术
参考答案：A
旅游饭店星级标志应置于饭店明显位置。 ()
A．正确
B．错误
________ to his experiment, he didn't notice that autumn had already come.
A．Devote
B．Devoting
C．Devoted
D．To devote
