正确答案: A

正确

题目：禾本科植物的幼穗分化就是花芽分化而形成花序的过程。( )

解析：A

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举一反三的答案和解析：

[单选题]It can be learned from the passage that parents should ________.

protect rather than destroy children’s dreams

解析：解析：推理判断题。从整篇文章开头叙述作者的开心的画彩虹的过程，到后来被母亲要求把街道清洗干净，到最后的感慨，表明作者写作的最终想要表达的目的之一是：父母应该支持孩子的某些创造性的行为，而不是一味的否定。

[单选题]设NA为阿伏伽德罗常数，下列叙述正确的是

1mol甲烷分子所含质子数为10NA D． 标准状况下，22.4L乙醇的分子数为NA

解析：

【解析】A项，镁的最外层电子数为2，故错；B项，乙酸为弱电解质，部分电离，故H＋小于0.1NA，错；C项，CH4的质子数为10，正确；D项，乙醇标状下不是气体，错。

[单选题]希脯历史学家希罗多德说，克利斯提尼“领着人民参与政治”。 克利斯提尼改革中符合这一评述的是①按财产多寡划分社会等级

②③

[单选题]两地地貌形成主导外力作用与岩石组合正确的是

甲——化学风化－流水侵蚀－石灰岩 D．乙——化学风化－流水侵蚀－石灰岩

[单选题]What was the normal price of the T-shirt?

＄30

[单选题]根据下面内容，回答 60 ~63 题： BComputer programmer David Jones earns￡35,000 a year designing new computer games， yet he cannot find a bank ready to let him have a credit card(信用卡)．Instead，he has been told to wait another two years，until he is 18．The 16-year-old works for a small firm in Liverpool， where the problem of most young people of his age is finding a job.David’s firm releases(推出) two new games for the fast growing computer market each month.But David’s biggest headache is what to do with his money．Even though he earns a lot, he cannot drive a car, take out a mortgage(抵押贷款)，or get credit cards．David got his job with the Liverpool-based company four months ago，a year after leaving school with six O-levels and working for a time in a computer shop．“I got the job because the people who run the firm knew

He has a handsome income.

[单选题]下列有关线粒体和叶绿体的叙述，错误的是

线粒体和叶绿体为双层膜结构，其内膜中酶的种类相同