Question

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I. Read the text below and choose the correct word for each space.

HOT-AIR BALLOONS

A hot-air balloon consists of three basic parts. The large balloon is (13) ................ as the “envelope” and is made of nylon - the same material used to produce kites, sails and sleeping bags. There are burners under the envelope to heat the air inside and finally a basket (14) ................ the passengers stand. From this (15) ................ the passengers can enjoy the views of the countryside below.

(16) ................ understand what allows the balloon to lift into the air you must know about “convection” or heat transfer. The scientific (17) ................ is that by heating the air inside the envelope you increase the space the air (18) ................ When this happens, (19) ................ air gets pushed out of the envelope. With less air in the envelope, it (20) ................ lighter and therefore able to travel up. Once the burner is shut off, however, the (21) ................ thing happens. Cold air from outside enters the envelope, (22) ................ the balloon heavier and it starts to fall.

1.	A.	said	B.	told	C.	called	D.	known
2.	A.	which	B.	that	C.	where	D.	when
3.	A.	position	B.	situation	C.	place	D.	condition
4.	A.	For	B.	By	C.	From	D.		To
5.	A.	reason	B.	explanation	C.	thought	D.	purpose
6.	A.	needs	B.	wants	C.	receives	D.	demands
7.	A.	much	B.	all	C.	many	D.	some
8.	A.	changes	B.	moves	C.	becomes	D.	develops
9.	A.	different	B.	opposite	C.	other	D.	unequal
10.	A.	causing	B.	letting	C.	making	D.	allowing

Answer 1

[Winter Hoàng]

1. C

2. C

3. A

4. B

5. B

6. D

7. D

8. C

9. B

10. A