题型:阅读选择 题类:常考题 难易度:普通
江苏省无锡市南长实验中学2019-2020学年八年级上学期英语12月阶段性质量调研试卷
Life is full of surprises and you never know how things will turn out.
Sir John Gurdon is a good example of this. As a boy, he was told he was hopeless at science and was at bottom of his class. Now, aged 79, the very same Gurdon shared the 2012 Nobel Prize in Medicine with Japanese stem cell (干细胞) researcher Shinya Yamanaka.
Like so many scientists, Gurdon shows us where the power of curiosity and perseverance(坚持) can lead.
When he was 15 in 1948, Gurdon ranked last out of the 250 boys at his high school in biology and every other science subject. Gurdon's high school science teacher even said that his dream of becoming a scientist was "quite ridiculous".
In spite of his teacher's criticisms(批评), Gurdon followed his curiosity and kept working hard. He went to the lab early and left later than anyone else. He experienced thousands of failures.
"My own belief is that we will, in the end, understand everything about how cells actually work," Gurdon said.
In 1962, Gurdon took a cell from an adult frog and moved its genetic (基因的) information into an egg cell. The egg cell then grew into a clone of the adult frog. This technique later helped to create the sheep Dolly in 1996,the first cloned mammal(哺乳动物) in the world.
In 2006, Gurdon's work was developed by Yamanaka to show that a sample(样本) of a person's skin can be used to create stem cells. Using this technique, doctors can repair a patient's heart after a heart attack.
"Luck favors the prepared mind," Gurdon told the Nobel Prize Organization. "Ninety percent of the time things don't work, but when they do, you have to seize(抓住) the chance."
a. create the sheep Dolly.
b. take a cell from an adult frog.
c. use a person's skin to create stem cells.
d. move a frog's genetic information into an egg cell.
e. grow into a clone of the adult frog.
Name | Personal Information |
Fei Junlong | Born in 1965 in Jiangsu, China An astronaut (宇航员) Traveled in Shenzhou VI in outer space with Nie Haisheng from October 12th to October 17th, 2005 |
Yao Ming | Born in 1980 in Shanghai, China The son of two great basketball players Joined the Houston Rockets (休斯敦火箭队)in June, 2002 |
Jay Chou | Born in 1979 in Taiwan, China A popular singer Favorite music: Hip-Hop |
Alfred Nobel (1833-1896) | Born in Sweden A scientist Known for the Nobel Prizes |
Helen Keller (1880-1968) | Not able to see or hear Worked hard and became one of the famous writers in America Wrote a lot, such as The Story of My Life |
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