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【单选题】
下列有关化学致癌的多阶段过程哪个是错误的A.
启动阶段是由致癌物造成的一系列基因损伤引起的
B.
促进阶段的基本特征是基因表达异常和细胞的异常增殖
C.
致癌物和DNA相互作用引起的体细胞突变是启动细胞癌变的最主要原因
D.
细胞表面分子结构的改变和血管的新生主要发生在促进阶段
E.
在进展阶段DNA的损伤更为严重而广泛
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举一反三
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【单选题】If the owner needs to evict a resident, he is also required to give 30 days notice in writing and deliver it the day before the rent is due.
A.
force to leave
B.
criticize
C.
refuse
【判断题】Non-linguistic context refers to context of situation, culture and style.
A.
正确
B.
错误
【单选题】______ refers to the verbal or non-verbal response to the speaker in speech communication.
A.
Interference
B.
Feedback
C.
Channel
D.
Situation
【单选题】_______ refers to the verbal or non-verbal response to the speaker in speech communication.
A.
Feedback
B.
Interference
C.
Message
D.
Situation
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