The origins of nest-building remain obscure, but current
observation of nest-building
activities provide evidence of their evolution. Clues to
this evolutionary process can be
found in the activities of play and in the behavior and
movements of birds during mating,
Line such as incessant pulling at strips of
vegetation or scraping of the soil. During the early
(5) days of the reproductive
cycle, the birds seem only to play with the building materials. In
preparation for mating, they engage in activities that
resemble nest-building, and continue
these activities throughout and even after the mating
cycle. Effective attempts at construction
occur only after mating.
Although nest-building is an instinctive ability,
there is considerable adaptability in
(10) both site selection and use of
materials, especially with those species which build quite
elaborate constructions. Furthermore, some element of
learning is often evident since
younger birds do not build as well as their practiced
elders. Young ravens, for example,
first attempt to build with sticks of quite unsuitable size,
while a jackdaw’s first nest
includes virtually any movable object. The novelist John
Steinbeck recorded the contents
(15) of a young osprey nest built in
his garden, which included three shirts, a bath towel, and
one arrow.
Birds also display remarkable behavior in collecting
building materials. Crows have
been seen to tear off stout green twigs, and sparrowhawks
will dive purposefully onto a
branch until it snaps and then hang upside down to break it
off. Golden eagles, over
(20) generations of work,
construct enormous nests. One of these, examined after it had been
dislodged by high winds, weighed almost two tons and
included foundation branches
almost two meters long. The carrying capacity of the eagles,
however, is only relative to
their size and most birds are able to carry an extra load of
just over twenty percent of their
body weight.
Question
1
|
The word
"obscure" in line 1 is closest in meaning to
A
|
unclear
|
(B)
|
interesting
|
C
|
complex
|
D
|
imperfect
|
Question
2
|
According
to the passage, which of the following activities is characteristic of the
early part of the reproductive cycle of birds?
A
|
Building
a nest
|
(B)
|
Selecting
a mate
|
C
|
Playing
with nest-building materials
|
D
|
Collecting
nest-building materials
|
Question
3
|
The word
"display" in line 17 is closest in meaning to
A
|
communicate
|
B
|
exhibit
|
C
|
initiate
|
(D)
|
imitate
|
Question
4
|
The
novelist John Steinbeck is mentioned in line 14 because he
(A)
|
compared
the size of osprey nests with the nests of other species
|
B
|
conducted
a scientific study on the behavior of ospreys
|
C
|
described
the materials ospreys can use to build their nests
|
D
|
was
the first to describe where ospreys built their nests
|
Question
5
|
Which of
the following birds are mentioned as those that build nests that include
unusual objects?
A
|
Crows
|
(B)
|
Sparrowhawks
|
C
|
Ospreys
|
D
|
Ravens
|
Question
6
|
According
to the passage, when gathering materials to build their nests, sparrowhawks do
which of the following?
A
|
Use
objects blowing in the wind
|
B
|
Collect
more branches than necessary
|
(C)
|
Select
only green twigs
|
D
|
Hang
upside down
|
Question
7
|
The word
"these" in line 20 refers to
A
|
golden
eagles
|
B
|
generations
|
©
|
winds
|
D
|
nests
|
Question
8
|
The word
"load" in line 23 is closest in meaning to
A
|
number
|
B
|
section
|
C
|
level
|
(D)
|
weight
|
Question
9
|
The
author mentions twenty percent in line 23 to indicate that
A
|
birds
can carry twenty percent of their own weight
|
B
|
eagles
are twenty percent bigger than most birds
|
C
|
the
nests of eagles are twenty percent of larger than those of other birds
|
(D)
|
twenty
percent of all nests include foundation branches
|
10. how
many paragraph who contained in readings above?
A. 4
B. 5
(C). 3
D. 7
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