(
A. Sunshine. B. Feeling. C. Pigment. D. Blood.
(
A. Leaves. B. Fruits. C. Pollen. D. Colours.
(
A. Animals which hide in secret places.
B. Animals which kill other animals for food.
C. Animals which change colours with the sun.
D. Animals which protect themselves from danger.
(
C
) 1. What is the cause that makes human skin change colours according to paragraph 2?A. Sunshine. B. Feeling. C. Pigment. D. Blood.
(
D
) 2. What can plants use to attract insects according to paragraph 3?A. Leaves. B. Fruits. C. Pollen. D. Colours.
(
B
) 3. What does the underlined word "predators" in paragraph 4 mean?A. Animals which hide in secret places.
B. Animals which kill other animals for food.
C. Animals which change colours with the sun.
D. Animals which protect themselves from danger.
(
B
) 4. What is the structure of the passage?答案：1. C
2. D
3. B
4. B
1. 这是一道细节理解题，需要从文章第二段中找到关于人类皮肤颜色变化原因的信息。文中明确提到“Human skin can be many different colours and it changes with the sun, our feelings and our health. This is because of pigments(色素), which reflect light and make what the eye sees as colours.”，所以人类皮肤颜色变化是因为色素。
2. 同样是细节理解题，从文章第三段“Plants also have pigments. Colours are important for them to live on. The bright colours of flowers catch the attention of insects, which then carry their pollen(花粉) from one flower to another.”可知，植物用颜色吸引昆虫。
3. 词义猜测题，根据第四段“Animals also use colours for their own need. They protect themselves with different colours so that they will not be seen by predators easily.”以及后面举例说明动物用颜色保护自己不被捕食者轻易发现，可推测“predators”是捕食其他动物作为食物的动物。
4. 文章结构题，文章第一段总述自然界色彩丰富，人类、植物和动物呈现不同颜色；第二段讲人类皮肤颜色变化原因；第三段讲植物颜色的作用；第四段讲动物颜色的用途；第五段总结自然界中颜色的多种原因和用途，所以是总 - 分 - 总结构。
2. D
3. B
4. B
1. 这是一道细节理解题，需要从文章第二段中找到关于人类皮肤颜色变化原因的信息。文中明确提到“Human skin can be many different colours and it changes with the sun, our feelings and our health. This is because of pigments(色素), which reflect light and make what the eye sees as colours.”，所以人类皮肤颜色变化是因为色素。
2. 同样是细节理解题，从文章第三段“Plants also have pigments. Colours are important for them to live on. The bright colours of flowers catch the attention of insects, which then carry their pollen(花粉) from one flower to another.”可知，植物用颜色吸引昆虫。
3. 词义猜测题，根据第四段“Animals also use colours for their own need. They protect themselves with different colours so that they will not be seen by predators easily.”以及后面举例说明动物用颜色保护自己不被捕食者轻易发现，可推测“predators”是捕食其他动物作为食物的动物。
4. 文章结构题，文章第一段总述自然界色彩丰富，人类、植物和动物呈现不同颜色；第二段讲人类皮肤颜色变化原因；第三段讲植物颜色的作用；第四段讲动物颜色的用途；第五段总结自然界中颜色的多种原因和用途，所以是总 - 分 - 总结构。