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【单选题】
下列化合物与HCN反生加成反应活性最强的是（）。A.
(C6H5)2CO
B.
C6H5COCH3
C.
Cl3CCHO
D.
CH3CHO CH 3 CHO
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反馈参考答案：
举一反三
【多选题】When we are introducing objects, presenting options and facts, and distinguishing between points, ideas, and facts, what gesture can't we use?
A.
The “Chop”
B.
The “Give”
C.
The “Show”
D.
The “T -rex arms”
【简答题】For children with cancer(癌),the facts of life include the facts of death. There is always the fear that they might not live to grow up．Yet they realize that fighting cancer is the only way of beating ...
【单选题】What statement is FALSE for “facts”?
A.
Factual information, or fact statement, is based on the observations we make about objects, people, and events.
B.
Facts in any social studies curriculum must be related to specific concepts that are part of the key ideas of the social studies standards.
C.
Factual information by itself is useful to students.
D.
Facts are statements of observations about objects, people, and events that provide evidence we use to develop meaning for concepts, generalizations, attitudes, and values.
【简答题】South AfricaA. South African
【判断题】ZH-CN;mso-bidi-language:AR-SA">儿童语言的发展阶段是 mso-fareast-font-family:宋体;mso-bidi-font-family:"Times New Roman";mso-ansi-language: EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">1.5 mso-ansi-la...
A.
正确
B.
错误
【多选题】What are differences between facts and opinions?
A.
Facts are universal and opinions differ from person to person
B.
Fact is that it is an objective reality whereas opinion is a subjective statement
C.
Facts are undebatable, while opinions are debatable
D.
None of the above
【简答题】South KoreaA. South Korean
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