问题 填空题

(1)如下图所示,一物体悬挂在饱和的氯化钠溶液中,在恒温条件下向烧杯内溶液分别加入下列物质(悬挂物不参加反应),说明弹簧测力计读数变化情况(填“变大”、 “变小”或“不变)。

①. 如果加入氯化钠晶体, 弹簧测力计读数__________;

②. 如果加入蒸馏水, 弹簧测力计读数_____________;

③. 如果加入氯化钾晶体, 弹簧测力计读数____________。

(2)请你各举出一个实例,说明下列有关溶液的叙述是错误的.

①. 溶液一定是无色的 实例: ________溶液不是无色的.

②. 均一. 稳定的液体都是溶液 实例: ________是均一. 稳定的液体,但不是溶液.

③. 溶液中的溶质一定是固体 实例:___________ 可做溶质,但不是固体.

答案

(1)①、不变;②、变大;③、变小。

(2)①、高锰酸钾;②、水;③、酒精。(其它正确说法也可以)

阅读理解

阅读理解。

     Pit-a-pat. Pit-a-pat. It's raining. "I want to go outside and play, Mum," Robbie says, "When can the rain

stop?" His mum doesn't know what to say. She hopes the rain can stop, too. "You can watch TV with me,"

she says. "No, I just want to go outside." "①Put on your raincoat." "Does it stop raining?" "No, but you can

go outside and play in the rain. Do you like that?" "Yes, mum." He runs to his bedroom and puts on his red

raincoat. "Here you go. Go outside and play." Mum opens the door and says. Robbie runs into the rain. Water

goes ②here and there. Robbie's mum watches her son. He is having so much fun. "Mum, come and play with

me!" Robbie calls. The door opens and his mum walks out. She is in her yellow raincoat. Mother and son are

out in the rain for a long time. They play all kinds of games in the rain.

1. What does Robbie want to do on the rainy day?

A. Help his mother.

B. Watch TV.

C. Wear his raincoat.

D. Go out.

2. What does the underlined phrase (短语) mean in Chinese?

A. ①放上②到处

B. ①穿上②这里和那里

C. ①穿上②到处

D. ①放上②这里和那里

3. Robbie has a _____ day that day.

A. happy

B. scary

C. dangerous

D. boring

4. Which of the following is TRUE according to the passage?

A. The raincoat can stop the rain.

B. Robbie's mum doesn't wear a raincoat in the rain.

C. Robbie first watches TV with his Mum

D. The color of Robbie's raincoat is red.

5. Which is the best title(标题)for the passage?

A. It's raining

B. Fun in the rain

C. Robbie and His mother

D. Robbie's raincoat

判断题