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吸烟有害健康,烟草燃烧释放的烟雾中含有3000多种对人体有害的化学物质。 (1)烟雾中能使人体内血红蛋白中毒的气体是___________(填化学式); (2)烟雾中含有的甲醛,会与蛋白质发生__________变化(选填“物理”或“化学”),使蛋白质失去原有的生理功能; (3)尼古丁(C 10 H 14 N 2 )是香烟中的主要有毒物质之一,它由_______种元素组成,所含氢元素与氧元素的质量之比为_________。
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举一反三
【简答题】Read this text and identify what the italicized words refer to. 1. she (Para. 2, Line 4): __________________________ 2. their (Para. 4, Line 2): __________________________ 3. it (Para. 5, Line 1): ___...
【单选题】What does the pronoun "that" (Sent.4, Para.1) most probably refer to ?
A.
tradition
B.
vitality
C.
hypocrisy
D.
ambition
【简答题】Task 7: Please read the text in Task 6 Flexible Responses to Business Challenges and identify what the italicized words refer to. Unit1-Task6_Flexible Responses to Business Challenges.docx 1. she (Par...
【单选题】下列属于中空性器官的是( )。
A.
B.
C.
D.
【简答题】Identifying the References Read this text and identify what the italicized words refer to. 1. she (Para. 2, Line 4): __________________________ 2. their (Para. 4, Line 2): __________________________ 3...
【简答题】Read Text B and identify what the italicized words refer to. 1. It ( Para. 1, Line 1 ) ____________________ 2. them ( Para. 3, Line 3 ) ____________________ 3. they ( Para. 4, Line 5 ) ____________...
【单选题】refer to (Para. 4, Line 3): ______ A. to mention or to speak about B. appoint C. represent
A.
B.
C.
C
【简答题】Read this text and identify what the italicized words refer to. 1. she (Para. 2, Line 4): __________________________ 2. their (Para. 4, Line 2): __________________________ 3. it (Para. 5, Line 1): ___...
【单选题】下列属于中空性器官的是( )
A.
B.
C.
D.
【简答题】U nit 1 comprehensive reading Read this passage and finish the following exercise After You Read, Please Identifying the References Read this text and identify what the italicized words refer to. 1. ...
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