When the research on the effect of electric fields on E.coli was begun in 1962, it was essential that a biologist–specifically, a microbiologist–contributed to the project.She does not want her name used because she did not become a scientific researcher for fame, but rather for the challenge of putting pieces of a scientific puzzle together.
As a girl, she was inspired by the work of great scientists: she read the story of the cure of malaria in the Panama Canal; she also read a biography of Madame Curie.These accounts inspired her to pursue a career in scientific research.After high school, she worked for the Michigan Department of Health, where she did research in biology and microbiology.There, her colleagues saw her talent and encouraged her to pursue science as a career.She went on to earn a bachelor’s degree from Michigan State University in 1948 in medical technology.
When she began working at Michigan State in the early 1960s,
she was balancing the demands of scientific research with the needs
of her family.At that time both of her children were in school.She
would work in the lab in the morning while they were at school,
go home to see them at lunch, return to the lab for the afternoon, go
home for dinner, and return to the lab in the evening, if necessary.
At that time, there were fewer women scientists working than
there are today, but she encountered several in her career.At the
Michigan Department of Health, many of her colleagues were women and, consequently, she did not feel isolated because of her gender–nor did she feel that she was treated differently because she was a woman.      
While working at Michigan State, she also felt that she was treated with respect by her peers.Her colleagues, among them doctors and Ph.D.chemists, all treated her as an equal.On the whole, she believes that there is not a great deal of difference between men and women in science.
56.Why does the woman scientist refuse to let out her name?
A.Because she is a shy lady.
B.Because she doesn’t mind her fame.    
C.Because she never takes pride in her research.
D.Because she never works for her fame.
57.What is the noble lady scientist really interested in?
A.The life stories of other women scientists.
B.Biology and microbiology.
C.The secret of the success of the other scientists.
D.The difference between men and women scientists.
58.Who helped and encouraged her to carry on her scientific research?
A.Her family and friends.                             B.Madame Curie.
C.Her colleagues and other scientists.              D.Some of the officials.
59.What is the whole passage mainly about?
A.The life story of a famous woman scientist with great success.
B.A brief introduction about an unknown great woman scientist.
C.The new development of a special woman scientist.
D.The secret of an infamous woman scientist.

400-year-old plants from the Little Ice Age were brought back to life, which could help us understand how the Earth will deal with climate change.

Moss(藓类植物) found buried beneath the Teardrop glacier(冰川) on Ellesmere Island in Canada has been brought back to life. Findings suggest that these plants could help repopulate regions exposed by melting ice caps. Plants that were buried beneath thick ice in Canada more than 400 years ago and were thought to have frozen to death have been brought back to life by Canadian scientists.

Samples of the moss plant, covered by the glacier during the Little Ice Age of 1550 to 1850 AD, were replanted in a lab at the University of Alberta and grew new stems(茎). Researchers now think these findings can give indication as to how regions can recover as the ice covering them melts.

Biologist Dr. Catherine La Farge and her team at the University of Alberta were exploring the region around the Teardrop glacier on Ellesmere Island. Ice on Ellesmere Island region has been melting at around four meters each year for the past nine years. This means that many areas of land that were previously covered by ice have since been exposed. Many ecosystems that were thought to have been destroyed during the Little Ice Age between 1550 and 1850 AD can now be studied, including many species that have never been studied before.

While examining an exposed area of land, La Farge and her team discovered a small area of moss called Aulacomnium turgidum. It is a type of bryophyte(苔藓类植物) plant that mainly grows across Canada, the US and the Highlands of Scotland.

Dr La Farge noticed that the moss had small patches of green stems, suggesting it is either growing again or can be encouraged to repopulate. Dr La Farge told the BBC, “When we looked at the samples in detail and brought them to the lab, I could see some of the stems actually had new growth of green branches, suggesting that these plants are growing again, and that blew my mind. When we think of thick areas of ice covering the landscape, we’ve always thought that plants have to come from refugia(濒绝生物保护区), never considering that land plants come from underneath a glacier. It’s a whole world of what’s coming out from underneath the glacier that really needs to be studied. The ice is disappearing pretty fast. We really have not examined all the biological systems that exist in the world; we don’t know it all.”

Dr La Farge took samples of the moss and, using carbon-dating techniques, discovered that the plants date back to the Little Ice Age. Dr La Farge’s team took the samples, planted them in dishes full of nutrient-rich potting soil and fed them with water.

The samples were from four separate species including Aulacomnium turgidum, Distichium capillaceum, Encalypta procera and Syntrichia ruralis. The moss plants found by Dr La Farge are types of bryophytes. Bryophytes can survive long winters and regrow when the weather gets warmer.

However, Dr La Farge was surprised that the plants buried under ice have survived into the twenty-first century. Her findings appear in proceedings(论文集)of the National Academy of Sciences.

1.Dr La Farge’s research is of great importance to ________.

A. knowing what the plants during the Little Ice Age were like

B. understanding how ecosystems recover from glaciers.

C. regrowing many species that have been destroyed before.

D. figuring out the effects of melting ice caps on moss.

2.The underlined part “blew my mind” in Paragraph 6 can best be replaced by “________”.

A. surprised me                   B. greatly frightened me

C. put my doubt out of my mind    D. was exactly what I had in my mind

3.According to the passage, Aulacomnium turgidum ________.

A. lives better in small groups              

B. is very active in hot weather

C. is strong enough to survive coldness

D. is chosen from Canadian refugia

4.Which of the following would be the best title for the passage?

A. Bryophyte ecology is greatly affected by climate change.

B. 400-year-old moss’s survival is a mystery to solve.

C. Moss in ancient times was discovered in Canada.

D. 400-year-old plants were brought back to life.

 

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