【简答题】吉非罗齐是一种降血脂药物,有人以A、B为初始物质,设计了如下合成路线,其中A是一种芳香烃。 请回答 (1)A的名称是____________ (2)下列关于F的化学性质的说法中正确的是___________(填选项字母)。 a.与浓硫酸共热可以发生消去反应 b.与小苏打溶液反应可放出气体 c.与NaOH溶液反应时,l mol F最多可消耗2 mol NaOH (3)反应④的反应类型是_______...
【单选题】1332 化学药物合成路线设计方法不包括( )
【单选题】The book What Technology Wants is mentioned to show______.
A.
the profit potential of old technologies
B.
the vitality of old technologies
C.
the possible revival of carbon paper
D.
the goal of technology
【单选题】1998年真题 区别甾体皂苷和三萜皂苷用
【单选题】Nobody wants to make friends with the girl ________ lies.
A.
suspected of having told
D.
suspected to have told
【简答题】Which of the following does the author recommend to a person who wants to be a teacher?
【单选题】What does the woman mean?
A.
She wants to eat the sweets.
B.
The sweets will be bad for her teeth.