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5. 看图，把图片和相应的句子配对，然后填空完成句子。
A.
B.
C.
D.(
— Because the
(
(
(
A.
B.
C.
D.(
C
) 1) — Why can the kites fly in the sky?— Because the
air
keeps
them high in the sky.(
A
) 2) The air ______ the bird and the plane high
in the sky.(
D
) 3) There are many ______ in the forest. They keep
the air fresh and clean.(
B
) 4) Look! The ______ from the factory makes
the air dirty.
答案：
1) air, keeps (C) 2) keeps, high (A) 3) trees, keep (D) 4) smoke, makes (B)
6. 读一读，将问答句配对。
1) What’s the matter?
• • A. It’s from the cars and buses.
2) Where is the smoke from?
• • B. We should plant more trees.
3) Is the air fresh in the street?
• • C. I have a headache.
4) What should we do to keep the air clean?
• • D. Because it keeps us alive.
5) Does the air have any taste or colour?
• • E. No, it isn’t.
6) Why is air important?
• • F. No, it doesn’t.
1) What’s the matter?
• • A. It’s from the cars and buses.
2) Where is the smoke from?
• • B. We should plant more trees.
3) Is the air fresh in the street?
• • C. I have a headache.
4) What should we do to keep the air clean?
• • D. Because it keeps us alive.
5) Does the air have any taste or colour?
• • E. No, it isn’t.
6) Why is air important?
• • F. No, it doesn’t.
答案：
1) C 2) A 3) E 4) B 5) F 6) D
7. 读一读，选择适当的句子完成对话。
A.Where is the smoke from?
B.The air is clean and fresh there.
C.It makes the air dirty.
D.What’s the matter, Linda?
E.I can smell the smoke.
Alice: 1)
Linda: No, I am not sad. My eyes hurt.
Alice: Oh, yes! 2)
3)
Linda: It’s from the factory over there.
Alice: I see it. 4)
Linda: Let’s go to the park. 5)
Alice: OK. Let’s go.
A.Where is the smoke from?
B.The air is clean and fresh there.
C.It makes the air dirty.
D.What’s the matter, Linda?
E.I can smell the smoke.
Alice: 1)
D
Are you sad?Linda: No, I am not sad. My eyes hurt.
Alice: Oh, yes! 2)
E
It’s so terrible (糟糕的).3)
A
Linda: It’s from the factory over there.
Alice: I see it. 4)
C
Oh, I want to cough (咳嗽) now.Linda: Let’s go to the park. 5)
B
Alice: OK. Let’s go.
答案：
1) D 2) E 3) A 4) C 5) B
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