《2025年通城学典组合训练八年级英语人教版江西专版》

二、阅读理解
A
范畴:人与自然 主题:自然景观 体裁:应用文 难度:★★★ 建议用时:5 分钟 评价:___/3
As winter temperatures drop, you can find some amazing natural landscapes. Take a look at the three examples below!

    Dead plants or animals can let off methane gas. When the plants or animals are covered with frozen(结冰的) water, the gas becomes ice bubbles. As the temperature drops, the bubbles freeze deeper. This makes beautiful columns of gas. The gas will get out when the ice melts in spring. When that happens, the water smells bad.

    Heavy snow can be compressed into ice. What do you get when geothermal hot spring smelt a long channel(水渠；沟渠) under the ice? An ice cave! The ice inside has different thickness(厚；厚度). It looks colorful in the sunlight. But don't stay there for too long the ice cave can fall down.

    When the air temperature falls faster than the water temperature, the dripping water can turn into icicles. A set of huge icicles is like a frozen waterfall. Icicles can be very sharp.You should be careful whenever you get close to them.

(D)1. When can the three amazing natural landscapes happen?
A. In spring. B. In summer. C. In autumn. D. In winter.
(A)2. Why should you be careful when you get close to icicles according to the material?
A. Because they are sharp. B. Because they are thick.
C. Because they are long. D. Because they are cold.
(A)3. 新考法·文章出处 Where can we probably read the material?
A. In a newspaper. B. In a diary. C. In a novel. D. In an ad.

答案： 1.D 2.A 3.A

B
范畴:人与自然 主题:自然生态 体裁:说明文 难度:★★★★★ 建议用时:7 分钟 评价:___/5
From red apples to green melons, fruits come in many different colors. Why do different kinds of fruits have so many colors?
According to a scientist, fruit colors actually come from their different pigments(色素), such as red or yellow carotenoid and blue or purple anthocyanin. These pigments appear in different amounts, depending on the fruit's environment. This causes the fruit to turn a certain color.
To find out how the environment affects fruit colors, Chinese scientists studied more than 280 different fruit colors, including white, red, blue, purple and black.
They found that red fruits mainly grow in cooler places. And instead of just growing in one place, you can find them growing in many places around the world. Blue and purple fruits mostly grow in warm places. These fruits grow a lot in just one specific(特定的) area. The scientists also found that the closer the fruit is to the equator(赤道), the darker its color will be.
Animals have also had the powerful effect on the evolution(进化) of fruit colors. Animals eat fruits and drop the seeds in other places later. This helps the fruit spread and grow in different places. Therefore(因此), in order to attract animals, some fruits develop colors that are easy for animals to see.
However, animals see colors in a different way. Fruits need to develop colors that are suited to animals' visual abilities. For example, birds can see red more easily than humans. Therefore, there are more red fruits in areas where birds live.
(D)1. According to the passage, why do blue and purple fruits mostly grow in warm places?
A. Because there is more sunlight in warm places.
B. Because there are more animals in warm places.
C. Because these fruits grow a lot in just one specific area.
D. Because the environment in warm places is good for anthocyanin.
(A)2. Which of the following is true?
A. Fruits grown close to the equator may be dark in color.
B. Green fruits usually grow in cool places.
C. Humans can see red more easily than birds.
D. Birds are color-blind and can see no colors.
(C)3. What do some fruits develop certain colors to do?
A. To let animals run away. B. To take in more sunlight.
C. To make animals eat them. D. To protect themselves.
(A)4. 新考法·组合式选择 Which of the following factors has influenced the evolution of fruit colors? Check and choose the right answer.
a. The environment. b. Pigments.
c. Animals. d. Humans' visual abilities.
A. abc B. bcd C. acd D. abd
(D)5. What's the best title for the passage?
A. What colors are different fruits? B. How many colors do fruits have?
C. When do people grow colorful fruits? D. Why do fruits have different colors?

答案： 1.D 2.A 3.C 4.A 5.D