人教版2021 选择性必修一Unit 1 Section C 一元二次方程怎么解课后
长猴子是什么原因综合练提升能力
根底知识自测
I单句语法填空
1. Although she___________〔found〕her company early on in life, she wasn't driven primarily by profit. (所给词的适当形式填空)
2. The captain of the ship was advid to turn back due___________a sudden heavy storm.(介词填空)
3. Since 1962, Pacific Science Center has been inspiring a passion___________discovery and lifelong learning in science , math and technology. (介词填空)
4. Against this background, the fact that there is an argument within the Government over whether to publish an official report on wind farms' impact on the countryside becomes eve
n___________〔extraordinary〕. (所给词的适当形式填空)
5. Over 300 years its population grew___________(gradual)from 800 people to 8 million. (所给词的适当形式填空)
6. This led to an unexpected___________〔conquent〕, though she had a wonderful time there. (所给词的适当形式填空做什么好挣钱)
7. Peter will take___________his post as the head of the travel agency at the end of next month. (用适当的单词填空)
8. I___________〔encounter〕many hikers who were headed to a distant camp-ground with just enough time to get there before dark. (所给词的适当形式填空)
9. It is important to remember that success is___________sum of small efforts made each day and often take years to achieve. (冠词填空)
10. Much time___________〔spend〕sitting at a desk, office workers are generally troubled by health problems. (所给词的适当形式填空)
学科素养提升
语法填空
语法填空
阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
World-famous physicist Stephen Hawking has died at the age of 76. He died____11____严蕊(peaceful)at his home in Cambridge in the early____12____(hour)of Wednesday.
Hawking was known西华园____13____the public for his work with black holes and relativity, and wrote veral popular science books , including A Brief History of Time. At the age of 22, Prof. Hawking____14____(漫威经典台词give)only a few years to live after doctors declared that he suffered from a rare dia. The illness left him in a wheelchair and he was ____15____(橄榄球运动员able)to speak except through a voice synthesizer(合成器).
Prof. Hawking was the first ____16____(t写秋思的诗句)out a theory of cosmology(宇宙学)explained by a union of the general theory of relativity and quantum mechanics. He also discovered that black holes____17____(leak)energy and fade to nothing—a phenomenon that would____18____(late)become known as Hawking radiation. Through his work with mathematician Sir Roger Penro, he proved that Einstein's general theory of relativity suggests space and time would have a beginning in the Big Bang and____19____end in black holes.
In a statement his children praid his "courage and persistence" and said his "brilliance and humour" inspired people across the world. They added, "He once said, 'It would not be much of a univer_____20_____it wasn't home to the people you love.' We will miss him forever."
阅读理解
Barbara McClintock was one of the most important scientists of the twentieth century. She made important discoveries about genes and chromosomes〔染色体〕.
Barbara McClintock was born in 1902 in Hartford, Connecticut. Her family moved to the Brooklyn area of New York City in 1908. Barbara was an active child with interests in sports and music. She also developed an interest in science.
She studied science at Cornell University in Ithaca, New York. Barbara was among a small number of undergraduate students to receive training in genetics in 1921. Years later, she noted that few college students wanted to study genetics.
Barbara McClintock decided to study botany, the scientific study of plants, at Cornell University. She completed her undergraduate studies in 1923. McClintock decided to continue her education at Cornell. She completed a Master 's degree in 1925. Two years later, she finished all her requirements for a doctorate.
McClintock stayed at Cornell after she completed her education. She taught students botany. The 1930s was not a good time to be a young scientist in the United States. The country was in the middle of the Great Depression. Millions of Americans were unemployed. Male scientists were offered jobs. But female geneticists were not much in d
emand.
An old friend from Cornell, Marcus Morton Rhoades, invited McClintock to spend the summer of 1941 working at the Cold Spring Harbour Laboratory. It was a rearch centre on Long Island, near New York City. McClintock started in a temporary job with the genetics department. A short time later, she accepted a permanent position in the laboratory. This gave her the freedom to continue her rearch without having to teach or repeatedly ask for financial aid.
By the 1970s, her discoveries had had an effect on everything from genetic engineering to cancer rearch. McClintock won the Nobel Prize in Physiology or Medicine in 1983 for her discovery of the ability of genes to change positions on chromosomes. She was the first American woman to win an unshared Nobel Prize.
21. When did McClintock get a doctorate degree?
