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虹橋中學教育集團第三次學情調(diào)研英語學科
滿分：90分時間：90分鐘
第一部分選擇題（共50分）
一、閱讀理解（共20小題，每小題2分；滿分40分）
第一節(jié)閱讀下面語言材料，從每題所給，的A、B、C、D四個選項中選出最佳選項。
A
We can do many interesting chemical tests in our-class.Today,we will use COz to blow up a
balloon!
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Materials
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Before you begin,make sure that you pull the balloon long to make it as easy as
possible to blow-up.And put the 40 mL of water into-the soft drink-bottle:Then follow
the pictures to finish
Instructions
thetest
baking
soda
If all goes well,then the gas will make the balloon blow up.Adding the vinegar
Principle
(lemon juice is OK)to the baking soda creates a chemical effect.The baking soda is a
base(),while the vinegar is an acid ()When the two are mixed,they'll create CO2.
(原理)
The gas rises up and runs away through the soft drink bottle.However,it doesn't get
away from the balloon,pushing it outwards and blowing it up.
1.What should you do before you begin the chemical test
A.Heat up the water.
B.Pull the balloon long
C.Blow up the balloon.
D:Fill the bottle with soft drink.
2.What shows that the chemical test is successful
A.The soft drink bottle is broken
B.CO2 has been created from the bottle.
C.The balloon gets bigger and bigger.
D.The balloon becomes-smaller suddenly.
3.What can be used instead of vinegar
A.Soft drink.
B.Baking soda.
C.Cold Water.
D.Lemon juice.
4.Where is this text most probably from
A.A poster.
B.A storybook.
C.A guidebook.
D.A science magazine.
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