2021年成都七中高三英语模拟试卷及答案解析
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2021年成都七中高三英语模拟试卷及答案解析
第一部分 阅读（共两节，满分40分）
第一节（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项
A
Bird migration is described as the regular, seasonal movement of bird populations from one place to another
and back again.
The longer days and rich food of the northern summer provide greater chances for birds to feed their young.
The longer daylight hours and enormous food resources allow birds to lay larger eggs than those of related
non-migratory species that remain in the tropics all year round. As the days shorten in autumn and the breeding
period is over, the birds return to warmer regions where the available food supply differs little with the seasons
changing. The advantages of migration make up for the high stress, physical exertion（消耗）, and other risks of the
migration.
Day length is the primary environmental factor that encourages birds to prepare for migration. They have an
increased appetite which results in weight gaining, giving them the fat reserves that provide energy for their
migratory flight. They also show more activity at night, which is when most birds migrate. While the length of day
is the primary reason for migration, birds also respond to temperature changes. For example, if a spring is late and
the temperature is lower than normal, birds delay migration; if a spring is early, birds also begin migration early.
The timing of the migratory cycle must allow birds to arrive on the breeding site so that there is time tobuild
a breeding place, mate, lay the eggs, and hatch the young before the rich food is available to feed the young in the
nest. Similarly, if birds wait until the climate in their northern breeding grounds becomes tolerable(可忍受的),
there will be no time togain the necessary weight that provides the energy needed for their southbound
migration.
1. Why do birds migrate to the north in spring?
A The temperature in the south has risen.
B. They like traveling and enjoy the journey.
C. The summer there is warmer than that in the south.
D. The environment there is more suitable for them to feed their baby birds.
2. What are the two factors that cause birds to migrate?
A. Day length and food supply. B. Night length and high stress.
C. Temperature changes and daylength.
D. Food supply and temperature changes.
3. Which can be the best title for the text?
A. Birds' Life
B. Birds' Migration
C. Birds' Breeding Habits
D. Birds' Living Environment
B
Do you ever listen to the songs that your parents like? Chances are that you don’t. You probably think the
music that they like is old and boring and that the songs on your playlist are muchcooler. But scientists found that
people’s music taste changes as time goes by. So it is likely that your own musical preferences will follow a similar
path to your parents’, whether you like it or not.
We used to think that culture and personality (个性) are the only reasons for different music choices. But
researchers at the University of Cambridge noticed that as people enter into different age groups, their social
environment changes, and so does their music taste. There are some musical periods that people go through in
their life.
The first period comes in the teenage years, during which people like strong music such as punk and rock,
because teenagers tend to be aggressive or want to be independent.
But as people move into early adulthood, their lifestyles change they want to build close relationships with
others. As a result, they become fonder of contemporary music, such as pop and R&.B, which is usually uplifting
and danceable.
When middle age comes, most people have settled down. During this period, people prefer music, such as
jazz and classical, as well as music like country, folk and blues.
As for old people, they prefer old songs in their childhoods. They generally listen to relaxing music, such as
country music and jazz music. But you must be questioning. “Aren’t there old people who are still interested in or
even crazy about rock music?” Of course there are. But their reasons for listening to rock music may have changed.
At that age people may listen to remind themselves of their youth.
4. What do young people usually think of the songs their parents enjoy?
A. They are actually less cool. B. They are worth listening to. C. They are especially serious. D. They are hard to understand.
5. How many musical periods are there that people go through in their life?
A. Two. B. Three.
C. Four. D. Five.
6. People who want to make friends mostly prefer ________.
A. jazz music B. country music
C. rock music D. pop music
