《2025年学霸题中题八年级英语上册译林版》

B
跨学科 物理 ①Do you like blueberries? If so, the next time you’re about to eat these delicious berries, take a good look at them. ______.
②For the most part, blueberries aren’t blue. If you carefully take off the skin of one blueberry, you’ll see that the fruit inside is white. If you rub(摩擦) the inside of the skin on a white piece of paper, you’ll see a reddish-purple colour. And if you gently rub the outside of a blueberry, the blue colour disappears and the berry looks almost black. But the moment you pick one, it does look blue. What’s going on?
③Well, there are two ways to create colours. The first is through pigments(色素). Pigments show the colour of the light they don’t take in. The most common pigment in plants is chlorophyll(叶绿素), a green pigment. Plant leaves appear green because chlorophyll doesn’t take in green light. It sends it out instead while taking in blue and red light. Plants prefer to take in blue light because it has more energy than any other light. In fact, there aren’t any “true blue” pigments in the plant world. ______.
④The second way to make colour is through “structural colour(结构色)”. This happens when the surface makes some colours of light look different. Have you ever seen the rainbow colours on a CD? These colours show up because of the tiny spaces between the CD’s thin layers(层). These spaces only allow certain colours to reach our eyes.
⑤Blueberries also create “structural colour” in their own way. The berries look black when they’re ripe(成熟的), but the plants build a thin layer of wax(蜡) on their outside. This layer is only 0.4% of a centimetre thick, but it gives the berries their blue look. The blue colour helps the plants because birds are attracted to the rare colour. They eat the berries and spread the seeds(种子) far and wide.
⑥Now your bowl of blueberries suddenly looks a lot more interesting. The fruit is beautiful, but its beauty is only skin deep!
5. 新考法 创新设问 Which of the following pictures correctly shows why a leaf looks green to us?

A. B.
C. D.
6. Blueberries appear blue in the same way that ______.
A. a CD appears colourful
B. a tree leaf appears green
C. they appear black when ripe
D. a fallen leaf appears yellow
7. The sentence “Then ask yourself: Are blueberries really blue?” should be put ______.
A. at the end of Paragraph 1
B. at the end of Paragraph 2
C. at the end of Paragraph 3
D. at the end of Paragraph 4
8. 新考法 篇章结构 Which of the following shows the structure of this passage?
A. ①/②③/④⑤⑥ B. ①/②/③④/⑤⑥
C. ①②/③④/⑤⑥ D. ①/②/③④⑤/⑥

答案： 5 - 8 BAAD
B
【语篇解读】本文是一篇说明文，主要介绍了蓝莓呈蓝色的原因。
5. B 图示理解题。根据“Plant leaves appear green because chlorophyll doesn't take in green light. It sends it out instead while taking in blue and red light.”可知，植物叶子呈绿色是因为叶片中含有叶绿素，而叶绿素主要吸收红光和蓝光，不吸收绿光，故而绿光被反射回来，使得叶片呈绿色，B 项符合。故选 B。
6. A 细节理解题。根据“The second way to make colour is through'structural colour'... Have you ever seen the rainbow colours on a CD? These colours show up because of the tiny spaces between the CD's thin layers.”以及“Blueberries also create'structural colour' in their own way.”可知，蓝莓呈现蓝色，就像 CD 呈现彩色一样，两者都是通过“结构色”制造颜色。故选 A。
7. A 补全文章题。根据第一段“Do you like blueberries? If so, the next time you're about to eat these delicious berries, take a good look at them.”及下文“For the most part, blueberries aren't blue.”可知，此处承上启下，引出蓝色这一话题。故选 A。
8. D 篇章结构题。通读全文可知，第一段主要讲述吃蓝莓时，看到蓝莓的颜色是蓝色；第二段主要讲述剥开蓝莓或者轻轻擦拭蓝莓的外部，这时看到的颜色都不是蓝色的；第三段到第五段讲述创造颜色的两种方法和蓝莓创造颜色的方法；最后一段总结全文。故选 D。