问题 选择题

下图是元素周期表中某元素的信息示意图,对图中信息理解不正确的是

A.核外电子数为24.31

B.质子数为12

C.元素名称为镁元素

D.属于金属元素

答案

答案:A

考点:

专题:化学用语和质量守恒定律.

分析:根据元素周期表提供的信息,原子序数=核外电子数=质子数,元素符号、元素名称及相对原子质量;

根据化学元素汉字名称的偏旁可辨别元素的种类,金属元素名称一般有“金”字旁;进行判断.

解答:解:A.根据元素周期表提供的信息判断:该元素核外电子数为12;故A说法错误;

B.根据元素周期表提供的信息判断:该元素的质子数为12;故B说法正确;

C.根据元素周期表提供的信息判断:该元素名称为镁元素;故C说法正确;

D.根据化学元素汉字名称的偏旁可辨别元素的种类,金属元素名称一般有“金”字旁;判断该元素属于金属元素;故D说法正确;

故选A.

点评:本题考查学生对元素周期表信息知识的理解、掌握与在解题中灵活应用的能力.

单项选择题
阅读理解

阅读理解

                                                    Interview with a president

     While many teenagers may dream of meeting with pop star Jay Chou or NBA hero Yao Ming, Li Jing

had a far more powerful person on her mind. The Senior 2 from Beijing No.35 High School dreamt of

meeting Russian President Vladimir Putin.

     After more than a year of hard work and with a little good luck, Li fulfilled her dream. On October

11, 2004, the 16-year-old girl joined a team of Chinese journalists who went to the Kremlin, in Moscow,

to interview Putin.

     Li felt nervous before talking with Putin. "But his greeting and warm smile put me at ease," she said.

     Li admires Putin very much, because of his strong will and style of leadership. "He looks very cool,"

Li said. During her interview, Li asked Putin whether he plans to educate his two teenage daughters to be

officials in the future. Putin smiled and answered he hopes they can do whatever job suits their interests

and personalities.

     Although Li would only have several minutes, she started working on her interview questions last

August after applying for the opportunity. "Journalists work is by no means easy. You need to do lots

of homework on your interviewee," she said. She read many books about Putin and Russia in her spare

time.?

     Li's parents encouraged her to be a student journalist. "We fully support her, as long as it does not

affect her studies," said her father. Previously in her job for a student magazine, Chinese Young

Journalists, she wrote a letter to President Hu Jintao during the SARS epidemic.

     Li has learnt a lot from her experience. She said learning to manage her time and developing the

confidence to speak with important people were not the things she could learn in class.?

1. The underlined word "interviewee" in the fifth paragraph probably means ______.

A. the person who interviews?

B. the person who is interviewed?

C. the person who know how to interview?

D. the person who plan to interview a famous people?

2. Which of the following best describes Li Jing's parents' attitude towards her being a student journalist?

A. They think to be a student journalist is purely a waste of time.?

B. They worry that to be a student journalist will affect her studies.?

C. They consider it is quite good for Li Jing on the condition of not striking her study.?

D. They neither support it nor object to it.?

3. Li Jing is different from those students of her age in that ________.

A. she doesn't like pop star Jay Chou?

B. she hates meeting with the NBA hero Yao Ming?

C. she wants to meet neither Jay Chou nor Yao Ming?

D. she dreams of meeting the present powerful Russian leader?

4. Which of the following statements is NOT TRUE?

A. Li realized her dream just because of her hard work.?

B. Li was at ease at the first sight of president Putin.?

C. Li considers Putin a great leader because of his strong will and style of leadership.

D. Li thinks it impossible to learn in class the confidence to speak with great people.