《2025年学霸提优大试卷七年级英语上册译林版》

C
(2024·湖北武汉期末)Do you like delicious blueberries? If so, when you eat next time, take a look at them. Are they really blue?
Not really. Take off the skin(果皮). The inside is white. Rub(摩擦) the inside of a blueberry on a white piece of paper. It is reddish-purple. And if you rub the outside of a blueberry, it gets almost black. But the moment you pick one, it does look blue. Why?
①The first way is through "structural colour(结构色)". ②The blueberry makes "structural colour" in its own way. ③When the blueberry is full grown, it is black. ④But a thin layer of wax(蜡层) on the outside of the blueberry gives it a blue look.
The second is through plant pigments(色素). The pigments on the blueberry skin take in green and yellow light and reflect(反射) blue light. That's why blueberries look blue in our eyes. In fact, there isn't any "true blue" in the plants. We can also see the similar features on the green leaves.
The blueberry's special colour way is cool. It shows nature's magic. More secrets in our nature are waiting for us to discover! Now your bowl of blueberries suddenly looks a lot more interesting!
(B)36. According to Paragraph 2, after you rub the outside of a blueberry, it almost looks ______.
A. blue
B. black
C. white
D. reddish-purple
(A)37. 新考法 补全文章题 Where should this sentence go in Paragraph 3?
There are two ways to make colours.
A. Before sentence①.
B. Before sentence②.
C. After sentence③.
D. After sentence④.
(C)38. 新考法 图示理解题 Which of the following probably shows why a leaf(叶子) looks green to us?

A.
B.
C.
D.
(A)39. The author writes the passage mainly to tell us ______.
A. why blueberries look blue
B. how blueberries take off the skin
C. why blue is special in the plant world
D. how blueberries taste delicious
(D)40. What does the author infer about nature in the end?
A. It shows national magic.
B. It has many kinds of fruit.
C. It is too hard to understand.
D. It holds many undiscovered things.

答案： 36. B 37. A 38. C 39. A 40. D