24. We can conclude from the passage that...
A) the first castle built by the Normans remained inhabited for a century.
B) a castle was a certain type of early defensive structure.
C) every noble in the Middle Ages had his own castle.
D) castles were used for defence, not as residences.
25. The author makes it clear that in the12ft century,...
A) a castle consisted only of a tower.
B) castles were strong enough to repel any attack.
C) the towers were built of stone.
D) a castle was still a residence only for the army.
26. We learn that castles became stronger and more defensive...
A) in reaction to the development of new military strategies.
B) as new and better construction methods were developed.
C) as more and more buildings were added for the increasing population.
D) as they began to accommodate larger populations.
Read the text. Then choose the correct answer for the gaps 27-28 in the text.
The covered wagon is important in the history of the United States. Some covered wagons (27)... in the East as early as 1717. They (28)... heavy loads for long distances. The front and back parts of the wagons were higher than the middle. These kept loads from falling out on steep hills.
27. A) were building B) were built
C) build D) built
28. A) brought B) fetched C) carried D)held
Read the text. Then choose the correct answer for the gaps 29-31 in the text.
The hot lamp loses energy to the surrounding air - this is carried (29)... by a convection current. The light and infra-red radiation are absorbed by the walls and other (30)... causing them to warm up. All the energy from the lamp (31)... into the room, causing a very small temperature rise. Almost all the energy that we take from sources such as electricity, gas, coal and petrol ends up as heat in our surroundings.
29. A) away B) with C) about D) in
30. A) surface B) surface' C) surfaces D) surfaces'
31. A) to spread out C) spreads out
B) spread out D) are spread out
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