问题 选择题

区分硬水和软水的最佳方法是

A.观察是否澄清、透明。澄清透明的为软水,不澄清透明的为硬水

B.品尝是否有异味。无异味的为软水,有异味的为硬水

C.用肥皂水进行区分。易起泡沫的为软水,不易起泡沫的为硬水

D.用加热的方法进行区分。不生成水垢或不易生成水垢的为软水,易生成水垢的为硬水

答案

答案:C

题目分析:区分硬水和软水的最佳方法用肥皂水进行区分。易起泡沫的为软水,不易起泡沫的为硬水。

点评:考查硬水和软水的区分方法,属于初三的基础化学知识点,只要熟记相关知识点即可解答。

阅读理解

“Do you like my dress?” She asked a lady. “My Mum made it just for me,” she said with tears in her eyes.

“Well, I think it’s very pretty, so tell me, little girl, why are you crying?”

The little girl answered in a low voice, “After Mum made me this dress, she went away. My Dad says that she’s up in heaven with grandfather.”

Finally the woman realized why she was crying. She felt very sorry for the little girl and held the child in her arms.

Just before the lady wanted to go, the girl stopping crying, walked back from the woman, and showed her a spot (点) on her dress, and said, “Right here is where my Mum kissed my dress, and here,” pointing to another spot, “and here is another kiss, and here, and here. Mum said that she had put all those kisses on my dress so that I would forget my sadness.”

The lady realized that she wasn’t just looking at a dress, no, she was looking at mother. The mother knew that she was going away. So she gave all her love to her lovely daughter and put it into the dress.

The lady no longer saw a little girl wearing a simple dress. She saw a child in her mother’s love.

根据短文内容,选择最佳答案。

小题1:The little girl was crying because her mother           .

A. died                     

B. went out with her grandfather       

C. was ill

小题2:The girl told the woman the spots on her dress were           .

A. the strange designs      

B. her sadness                     

C. her mother’s kisses

小题3:The little girl showed the lady           .

A. how beautiful her dress was

B. how happy she was

C. how great the mother’s love was

小题4:According to the passage, it’s clear that the woman was           .

A. the girl’s relation     

B. a careless woman                

C. kind to the girl

小题5:From the story, we learn that           .

A. a mother should take her child with her

B. mother’s love is the greatest in the world

C. a girl should wear a dress made by her mother

单项选择题