问题 选择题

在一个大萝卜上挖个小洞,向小洞中注入饱和食盐溶液,过一段时间后将洞内的食盐溶液倒出。在相同的温度下,发现倒出的食盐溶液还可溶解少量的食盐,这说明倒出的食盐溶液 [ ]

A. 是氯化钠的不饱和溶液

B. 氯化钠溶解度降低

C. 是氯化钠的饱和溶液

D. 氯化钠溶解度升高

答案

答案:A

阅读理解

阅读理解。

A: The wind is blowing lightly (轻轻地). I really love this weather.

B: Me, too.

A: Let's fly a kite.

B: Good idea.

(A few minutes late)

A: Look at the sky, Jack. The clouds are moving quickly.

B: Good. The wind is getting stronger. Look, our kite is high in the sky.

A: Hold the kite tightly (紧紧地), Jack. The wind is getting stronger and stronger.  

B: The wind is too strong now. Look, a lot of leaves (树叶) are falling from the trees.

A: Don't look at the leaves. Get our kite back.

B: The string on our kite breaks (断). Oh, no! It's flying away.

A: The sky is getting dark. I'm very afraid.

B: Let's go home.                          

1. What's the weather like in the beginning?

A. It's fine.      

B. It's rainy.        

C. It's windy.        

D. It's snowy.

2..The ______ becomes dark when they are flying a kite.

A. Cloud        

B. Sky            

C. Wind            

D. Kite

3..What happens to their kite when the wind blows strongly?

A. It flies higher and higher.            

B. It gets back.

C. It flies away.                      

D. It falls in a tree.

4..A lot of ______ fall when the wind blows strongly.

A. fruits        

B. birds            

C. kites            

D. leaves

5..From the dialogue, we know a ______ will come when they are flying a kite.

A. fine day  

B. storm (暴风雨)    

C. snow          

D. flood (洪水)

选择题