Unit 2 Colours 第1课时 Comic strip & Welcome to the unit（备作业）-【上好课】2021-2022学年九年级英语上册同步备课系列（牛津译林版）

Unit 2 第1课时 【上好课】2021-2022学年九年级英语上册同步备课系列（牛津译林版） 一、单项选择 1．Though Zhong Nanshan is in his 80s, he makes a great ______ to the medical development. A．celebration B．contribution C．conversation D．collection 2．—Thank you for the ______ you gave me. —I’m glad they’re helpful. A．suggestions B．advice C．news D．information 3．The doctor warns me that the risk of having a heart disease will be increased if I ______ two more kilos. A．put on B．end up C．deal with D．take off 4．Our parents are always there behind us. They are ______ us whatever we do. A．interested in B．strict with C．proud of D．get on with 5．—Nowadays, many young people get used to______ late every day. —Exactly. But that’s not a good habit. A．stay up B．staying up C．stay out D．staying out 二、完型填空 There are purple clothes, purple handbags, purple bicycles, purple furniture, even purple computers! So purple is one of the most 6 colors today. But in the past, purple was a very expensive and unusual color. Let’s take a look at the rich history of the color purple. Some scientists believe that the first plants to appear on Earth over 500 million years ago probably looked purple, not green. Plants today are green because 7 use green chlorophyll(叶绿素) to produce energy. But these early plants probably used something called retinal, which is a dark purple color. During the time of the Roman Empire(37BC-476AD), it was very 8 to make purple dye. The dye came from sea snails(海螺). But 10,000 dead sea snails 9 you just one gram of purple dye...as well as a very bad smell! This special purple dye was called Tyrian purple, and it was the preferred color of emperors. In 16th-century England, purple was 10 for the king’s family members. Queen Elizabeth I’s clothes were purple, but ordinary people were not allowed to 11 the color. In 1856, William Perkin, an 18-year-old 12 student, noticed something strange while doing an experiment. The chemicals he used to clean his instruments 13 with the chemica