【简答题】d_______ v.拒绝,谢绝;下降,衰退
【判断题】含有 α—H 的醛或酮,在酸或碱的催化作用下生成 β- 羟基醛或 β -羟基酮的反应(醛、酮之间的缩合)叫 α—H 醛酮的自身缩合
【单选题】Spring is coming, and it is getting __________. [ ]
【单选题】'For your coming vacation, why _________ corning to Guiyang?' 'Good idea!'
【单选题】1979 年 ( ) 剪纸艺人张永寿被国家授予“中国工艺美术大师”称号。
【单选题】What does Ms. Cook imply that her main purpose was in coming to this town?
A.
To attend a conference.
B.
To see the planetarium.