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【单选题】
对乙酰氨基酚的化学鉴别反应,下列那一项是正确的()A.
直接重氮化偶合反应
B.
氯化物反应
C.
重铬酸钾反应
D.
反应
E.
以上均不对
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皮皮学刷刷变学霸
举一反三
【简答题】“笔墨丹青”中，“丹”指的是什么颜色？
【判断题】The author said that the typewriter his mother had purchased was useful. (Unit 5 The Day Mother Cried)
A.
正确
B.
错误
【单选题】The author said that the typewriter his mother had purchased was ______.
A.
useful
B.
useless
C.
of some use
D.
secondhand
【简答题】The author said that the incident was key because it pointed to ______________ in the educational and artistic practices in China and America.
【单选题】The author said that the typewriter his mother bought was_____.
A.
useless
B.
useful
C.
of some use
D.
of little use
【单选题】2005年7月4日美国进行了“炮轰”彗星太空实验。这次实验在帮助人类首次揭开彗星内部秘密的同时,也会帮助揭开地球乃至整个太阳系的起源和宇宙生命起源之谜。这说明( )
A.
意识是与物质同时存在、共同发展的
B.
意识能够完全地反映客观世界
C.
意识能够正确地反映客观事物的本质和规律
D.
意识是经过实践检验的正确认识
【判断题】The author said that the typewriter his mother had purchased was useless. (Unit 5 The Day Mother Cried)
A.
正确
B.
错误
【单选题】The author said that a man can readily forget a woman's face because of the following reasons except________.
A.
a woman's face will change with age
B.
a woman will present different looks when she wears different clothes
C.
a man has poor memory
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