沪教版（深圳）四年级下册 Unit 7 How do things change?单元阅读训练
试卷更新日期：2026-06-12 类型：单元试卷
一、主题：物质变化
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1. Read and judge. Then correct the false statements.（阅读短文，思考因果关系并判断正误，在横线上更正错误的部分）
Hot springs
Hot springs are small lakes with hot water. In some hot springs, the hot rocks at the bottom of the spring heat the water. In others, the water heats up under ground.
When the water is very hot, some of it changes to steam. The water was a liquid, and now it's steam, a gas.
When hot steam meets warm air, we can't see a lot of steam. When hot steam meets very cold air, we can see a lot of steam.
Be careful in hot springs! The hot water and hot steam can be dangerous.
2. 你想知道美味的煎饼(pancake)怎么做吗?这里有材料清单和制作步骤，跟着做很容易!阅读短文，选择正确的答案。Pancakes are loved everywhere.People eat them for breakfast,with a cup of hot coffee to start the day.Do you like pancakes?If you do,you can make them easily!Just follow these simple steps.
What Do We Need?
①2 cups of flour ②1/2 teaspoon of salt(盐)③2 eggs
④1/4 cup of vegetable oil(植物油) ⑤1 cup of butter(黄油)
How Do We Make It?
1. In a big bowl,stir(搅拌)the flour and salt,
2.Put the eggs and oil into the flour.
3.Heat a big pan over medium-heat(中火).
4.Put a large spoon of batter(面糊)onto the pan.Cook until the batter dries(变干).
5.Flip(翻转)the pancake.Cook until the other side turns brown.When both sides are light brown,it's ready!
(1)、What do we put into the flour first?A、Eggs and oil. B、Salt. C、Butter.(2)、How much vegetable oil do we need?A、1 cup. B、1/2 teaspoon. C、1/4 cup.(3)、What's the right order to make pancakes?①Put the eggs and oil into the flour. ②Cook the batter.
③Flip the pancake. ④Stir the flour and salt. ⑤Heat the pan.
A、④①⑤②③ B、④①③⑤② C、③④⑤①②(4)、When is the pancake ready?A、When the batter dries. B、When one side turns brown. C、When both sides are light brown.(5)、Where can we probably read this text?A、In a science book. B、In a cookbook. C、In an art book.3. Mike的爸爸给孩子科普了一些生活中的小知识。阅读短文，判断句子正误。When Mike and his family make ice cream，Dad puts salt and ice in the big bag.Mike asks，"Why？" Dad says，"It's science(科学)！"
Ice melts at 0℃.But when we add salt to ice，the salt lowers(降低) the freezing point of the ice.The ice around the bag gets even colder，maybe 10℃or lower！This super-cold ice mixture can take heat(热量) away from the cream mixture in the bag very quickly.So the cream mixture quickly freezes into ice cream.
We also use salt to speed up the melting of ice on roads in winter.
It makes the ice melt quickly so that cars can drive safely.Salt is very useful！
(1)、Salt makes ice melt at a higher temperature.(2)、The ice and salt mixture can get colder than 0℃.(3)、We also use salt to make ice on roads in winter.(4)、The passage is about why salt is used when making ice cream.