Soal Latihan dan Jawaban Reading Comprehension 83

Monday, March 26th, 2012 - reading comprehension

Birds that feed in flocks commonly retire together into roosts. The reasons for roosting

communally are not always obvious, but there are some likely benefits. In winter

especially, it is important for birds to keep warm at night and conserve precious food

reserves. One way to do this is to find a sheltered roost. Solitary roosters shelter in

(5)      dense vegetation or enter a cavity – horned larks dig holes in the ground and

ptarmigan burrow into snow banks – but the effect of sheltering is magnified by

several birds huddling together in the roosts, as wrens, swifts, brown creepers,

bluebirds, and anis do. Body contact reduces the surface area exposed to the cold air,

so the birds keep each other warm. Two kinglets huddling together were found to

(10)    reduce their heat losses by a quarter and three together saved a third of their heat.

 

The second possible benefit of communal roosts is that they act as “information

centers.” During the day, parties of birds will have spread out to forage over a very

large area. When they return in the evening some will have fed well, but others may

have found little to eat. Some investigators have observed that when the birds set out

(15)    again next morning, those birds that did not feed well on the previous day appear to

follow those that did. The behavior of common and lesser kestrels may illustrate

different feeding behaviors of similar birds with different roosting habits. The common

kestrel hunts vertebrate animals in a small, familiar hunting ground, whereas the very

similar lesser kestrel feeds on insects over a large area. The common kestrel roosts and

(20)    hunts alone, but the lesser kestrel roosts and hunts in flocks, possibly so one bird can

learn from others where to find insect swarms.

 

Finally, there is safety in numbers at communal roosts since there will always be

a few birds awake at any given moment to give the alarm. But this increased protection is

partially counteracted by the fact that mass roosts attract predators and are especially

(25)    vulnerable if they are on the ground. Even those in trees can be attacked by birds of

prey. The birds on the edge are at greatest risk since predators find it easier to catch

small birds perching at the margins of the roost.

 

Reading Comprehension 83

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Question 1
What does the passage mainly discuss?
A
How birds find and store food.
B
Why some species of birds nest together.
C
Why birds need to establish territory.
D
How birds maintain body heat in the winter.
Question 2
The word "conserve" in line 3 is closest in meaning to
A
retain
B
locate
C
share
D
watch
Question 3
Ptarmigan keep warm in the winter by
A
Building nests in trees.
B
Digging tunnels into the snow.
C
Burrowing into dense patches of vegetation
D
huddling together on the ground with other birds.
Question 4
The word "magnified" in line 6 is closest in meaning to
A
modified
B
combined
C
intensified
D
caused
Question 5
The author mentions kinglets in line 9 as an example of birds that
A
Nest with other species of birds
B
Usually feed and nest in pairs.
C
Nest together for warmth
D
protect themselves by nesting in holes.
Question 6
The word "forage" in line 12 is closest in meaning to
A
rest
B
fly
C
assemble
D
feed
Question 7
Which of the following statements about lesser and common kestrels is true?
A
The common kestrel nests in trees, the lesser kestrel nests on the ground.
B
The lesser kestrel and the common kestrel have similar diets.
C
The common kestrel nests in larger flocks than does the lesser kestrel.
D
The lesser kestrel feeds sociably but the common kestrel does not.
Question 8
The word "counteracted" in line 24 is closest in meaning to
A
suggested
B
negated
C
shielded
D
measured
Question 9
Which of the following is NOT mentioned in the passage as an advantage derived by birds that huddle together while sleeping?
A
Staying together provides a greater amount of heat for the whole flock.
B
Some birds in the flock function as information centers for others who are looking for food.
C
Several members of the flock care for the young.
D
Some members of the flock warm others of impending dangers.
Question 10
Which of the following is a disadvantage of communal roosts that is mentioned in the passage?
A
Groups are more attractive to predators than individual birds.
B
Some birds in the group will attack the others.
C
Food supplies are quickly depleted
D
Diseases easily spread among the birds.
Question 11
The word "they" in line 25 refers to
A
mass roosts
B
predators
C
trees
D
a few birds
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