题目内容
Elderly adults who regularly drink green tea may stay more active and independent than their peers over time,according to a Japanese study that covered thousands of people.
Green tea contains antioxidant chemicals that may help ward off the cell damage that can lead to disease.Researchers have been studying green tea's effect on everything from cholesterol(胆固醇)to the risk of certain cancers,with mixed results so far.
For the new Japanese study,researchers decided to examine the question of whether green tea drinkers have a lower risk of frailty and disability as they grow older.
Tomata and his colleagues followed nearly 14,000 adults aged 65 or older for three years.
They found those who drank the most green tea were the least likely to develop “functional disability”,or problems with daily activities or basic needs,such as dressing or bathing.
Specifically,almost 13 percent of adults who drank less than a cup of green tea per day became functionally disabled,compared with just over 7 percent of people who drank at least five cups fl day.
The study did not prove that green tea alone kept people active as they grew older.
Green-tea lovers generally had healthier diets,including more fish,vegetables and fruit,as well as more education.lower smoking rates,fewer heart attacks and strokes,and greater mental sharpness.
They also tended to be more socially active and have more friends and family to rely on.
Although it's not clear how green tea might offer a buffer(缓冲剂)against disability,Tomata's team did note that one recent study found green tea extracts(提炼物)seem to increase leg muscle strength in older women.
While green tea and its extracts are considered safe in small amounts,they do contain caffeine and small amounts of vitamin K,which means it could block drugs that prevent blood thickened.
【小题1】Which of the following can summarize the passage best?
A.Green tea makes you less active. |
B.Green tea makes you less disabled. |
C.Green tea makes you more friendly. |
D.Green tea makes you more educated. |
A.form | B.absorb | C.remove | D.prevent |
A.prove whether the Japanese study is correct |
B.know if green tea drinkers are independent |
C.help nearly 14,000 adults aged 65 or older |
D.study green tea's effect on cholesterol |
A.Reduce functional disability. |
B.Keep old people active. |
C.Make more friends. |
D.Suffer fewer heart attacks. |
A.green tea is safe to drink |
B.green tea should be drunk properly |
C.green tea is poisonous for old people |
D.vitamin K is helpful to us |
【小题1】B
【小题2】D
【小题3】A
【小题4】B
【小题5】B
解析
October 31, 2009, California
Tsien Hsue-shen, PhD'39, one of the founders of the Jet Propulsion Laboratory, died on October 31, He was 98.
Tsien, born in the eastern Chinese city of Hangzhou, graduated from the National Qinghua University in 1934 and in August of 1935 he left China to study at the Massachusetts Institute Technology. In 1936 he went to the California Institute of Technology to commence graduate studies .Tsien obtained his doctor degree in 1939 and would remain at Caltech for 20 years, becoming the Goddard Professor and establishing a reputation as one of the leading rocket scientists in the United States.
In 1943, Tsien and two others in the Caltech rocketry group drafted the first document to use the name Jet Propulsion Laboratory. During the Second World War, he was amongst the other scientists participated the "Manhattan Project" .After World War II he served as a consultant to the United States Army Air Force. During this time, Conlonel Tsien worked on designing an intercontinental space plane. His work would inspire the X--20Dyna-Soar which would later be the inspiration for the Space Shuttle. In1945 Tsien Hsue--shen married Jiang Ying, the daughter of Jiang Baili--one of the Chinese nationalist leader Chiang Kai--shen's leading military strategists. But in 1950, the Chinese-born scientist was accused of harboring Communist sympathies and stripped of his security clearance.
In September 1955 he was permitted to leave for China, where Tsien resumed his research, founded the Institute of Mechanics, and went on to become the father of China's missile program, a trusted member of the government and Party's inner circle, and the nation's most honored scientist, Tsien retired in 1991 and has maintained a low public profile in Beijing, China. The PRC government launched its manned space program in 1992 and used Tsien's research as the basis for the Long March rocket which successfully launched the Shenzhou V mission in October of 2003.The elderly Tsien was able to watch China's first manned space mission on television from his hospital bed.
In his late years, since the 1980s, Tsien devoted himself to spirituality research, and advocated scientific investigation of traditional Chinese medicine, Qigong and "special human body functions".
【小题1】The underlined word "commence" in this passage probably means ____
A.make up | B.get | C.begin | D.promise |
A.45 | B.28 | C.24 | D.34 |
a. his later life b. return to China c. career in the U.S.A d. his early life and education
A.a-b-c-d | B.d-c-b-a | C.d-b-c-a | D.c-b-d-a |
A.Tsien Hsue--shen got a doctor's degree in 1939. |
B.Tsien Hsue--shen married Jiang Ying, the daughter of Chinese nationalist leader Chiang Kai-shen. |
C.Tsien Hsue-shen has made a contribution to the Space Shuttle. |
D.Tsien Hsue-shen was interested in traditional Chinese medicine, qigong and "special human body functions" in his later life. |