《2025年通城学典课时作业本九年级英语上册译林版宿迁专版》

五、完形填空。〔人与社会——社会与文化〕
There are purple clothes, purple handbags, purple bicycles, purple furniture and purple computers! So purple is one of the most 1 colours today. But in the past, purple was a very expensive and unusual colour. Let's take a look at the rich 2 of the colour purple.
Some scientists believe that the first plants appearing on the earth over 500 million years ago 3 looked purple, not green. Plants today are green because 4 use chlorophyll(叶绿素) to produce energy. 5 early plants probably used something called retinal(视黄醛).
During the time of Roman Empire, it was very 6 to make purple dye(染料). The dye came from sea snails(海螺). But 10,000 dead sea snails 7 you just one gram of purple dye... as well as a very bad smell! This 8 purple dye was called Tyrian purple, and it was the preferred 9 of emperors.
In the 16th century, purple was 10 for the king's family members in England. Queen Elizabeth I's clothes were purple, but ordinary people were not allowed to 11 the colour.
In 1856, William Perkin, an 18-year-old 12 student, noticed something strange while doing an experiment(实验). The chemicals(化学品) he used to clean his instruments 13 with the chemicals he used in his experiment and produced a bright purple colour. This 14 led Perkin to start a company using this chemical mixture to make purple dye. The dye was much 15 than sea-snail dye. Thanks to Perkin, now anyone can afford to wear purple clothes.
( )1. B
( )2. A
( )3. D
( )4. B
( )5. C
( )6. C
( )7. A
( )8. C
( )9. A
( )10. D
( )11. A
( )12. B
( )13. B
( )14. C
( )15. C

答案： 1. B 2. A 3. D 4. B 5. C 6. C 7. A 8. C 9. A 10. D 11. A 12. B 13. B 14. C 15. C