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问题 单项选择题

治疗阿米巴脓胸，首选药物为（）

A.灭滴灵

B.氧氟沙星

C.氟哌酸

D.大扶康

E.庆大霉素

答案

参考答案：A

解析：治疗阿米巴脓胸，首选灭滴灵剂量0.4g，每日3次，连服7天。

选择题

在H2O2溶液中加入KI和H2SO4的混合溶液，迅速发生反应，放出大量气体，反应过程可表示如下：①H2O2+2KI+H2SO4=I2+K2SO4+2H2O；②H2O2+I2=2HIO；③H2O2+2HIO=I2+O2↑+2H2O．下列说法正确的是（　　）

A．H2O2在上述3个反应中均做氧化剂

B．H2O2氧化性强于HIO，还原性弱于I2

C．上述过程中每生成1mol氧气，消耗1mol双氧水

D．在反应后的溶液中加入淀粉，溶液呈现蓝色
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改错题

下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。

增加：在缺词处加上一个漏字符号(∧)，并在其下面写出该加的词。

删除：把多余的词用斜线(\)划掉。

修改：在错的词下划一横线，并在该词下面写上修改后的词。

注意：1. 每处错误及其修改均仅限一词。

Today is Mother’s Day. I love mother so much that I’ve done many things for him. In the morning I buy some flowers with my pocket money and put them in a vase. In the afternoon, I went to buy some vegetable and cooked simple but delicious dinner for my family. After the meal, I gave mother a card what I made myself and said “Happy Mother’s Day” to her. Then I told her to pay more attention on her health and not overwork. I also promised to help her to do some housework from today on. Heard the words, mother was moved to tears.

Today is a specially day, warm but meaningful.
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