问题 多选题

下列化学用语,不能表示氯离子的是(  )

A.Cl-

B.

 3717
Cl

C.

D.1s22s22p63s23p6E.

 3717Cl 

答案

A.根据离子的表示方法:在表示该离子的元素符号右上角,标出该离子所带的正负电荷数,数字在前,正负符号在后,带1个电荷时,1要省略,因此氯离子表示为:Cl-,故A正确;

B.

 3717
Cl表示质子数为17,中子数为37的氯原子,故B错误;

C.

核内质子数为17,核外电子数为18,是氯离子,故C正确;

D.1s22s22p63s23p6核内质子数为17,核外电子数为18,是氯离子,故D正确.

E.

 3717
Cl表示质子数为17,中子数为37的氯原子,故E错误;

故选BE.

写作题

写作

阅读下面的短文,然后按照要求写一篇150词左右的英语短文.

     Have you been asked for money by some beggars who have disabilities while you're enjoying

shopping? Do you have any pity for that kind of people or just feel afraid? For whatever reasons,the

number of disabled beggars bumming(讨乞) along the street has increased rapidly.

     Why are there so many disabled people begging in the street? The reasons are so various that we don't need to understand. But at least,we know that they do not lead an easy life. So we should help them in

some ways.

     The treatment for disabled people should go like this: First,accept them. Don't be afraid of looking at

the terrible shape of disabled. Try to treat them equally. Because they are a part of the society,we can't

abandon them. The second is to help them as much as we could. If you can be a volunteer and do some

work for the disabled people that would be very nice. That does good not only to disabled people but also to yourself,because you will feel good after your kind action.

     So give an air of warmth to disabled people,and the world would be much better.

    【写作内容】

     (1) 以约30词概括短文内容要点;

     (2) 以约120词就 "How to care for the disabled" 这一话题发表你的看法,并包含如下要点:

     ① 对待残疾人的正确态度;

     ② 举例说明我们应该如何帮助残疾人;

     ③ 残疾人也应该享受平等的权利.

   【写作要求】

    (1) 可以使用实例或其他论述方法支持你的论点,也可以参照阅读材料的内容,但不得直接引 用原文中句子;

    (2) 文中不能出现考生真实姓名和学校名称.

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