From {#blank#}1{#/blank#} early age he was interested in plants. He {#blank#}2{#/blank#} (study) agriculture in college and as a young teacher he began experiments in crop breeding. He thought that the key to {#blank#}3{#/blank#} (feed) people was to have more rice and to produce it more quickly. He thought there was only one way {#blank#}4{#/blank#} do this-by crossing different species of rice plant, and then he could produce a new plant which could give a {#blank#}5{#/blank#} (high) yield than either of the original plants.

    Tu Yoyo was honored with the Nobel Prize in Physiology or Medicine  {#blank#}1{#/blank#}Oct. 5. She was the first Chinese citizen {#blank#}2{#/blank#}(win) a Nobel Prize in science. Tu {#blank#}3{#/blank#}(share) the prize with the Irish-born William Campbell and Satoshi Omura of Japan.

    Tu is a researcher at the China Academy of Traditional Chinese Medicine now. She  {#blank#}4{#/blank#}(give) the prize for  {#blank#}5{#/blank#} (develop) artemisinin (青蒿素) , a new drug therapy against malaria( 疟疾)， {#blank#}6{#/blank#} has saved millions of lives worldwide, especially in developing countries.

    Tu and her colleagues joined a government project to find a new malaria drug in the late 1960s. They made 380 herbal extracts from two thousand recipes from traditional Chinese medical books. In 1971, after nearly two hundred  {#blank#}7{#/blank#} (fail), Tu's team  {#blank#}8{#/blank#}(final) found an extract that was 100% effective against the malaria parasites-atremisinin. In 2001, the World Health Organization made artemisinin {#blank#}9{#/blank#} (it) first choice in the treatment of malaria.

    “The discovery of artemisinin is a gift to mankind from traditional Chinese medicine. It's the achievement of the research team. Winning the prize is  {#blank#}10{#/blank#} honor for Chinese science and traditional Chinese medicine,” Tu said.

    Humans like to live and work in groups. Language is the “cement(胶合剂)”{#blank#}1{#/blank#}holds these groups together. Language is part of culture. Culture, in this sense,{#blank#}2{#/blank#} (mean) all those customs, skills, and attitudes that are part of the behavior of a {#blank#}3{#/blank#} (particularly) group. What you think {#blank#}4{#/blank#} what you want in life are all affected by the culture of the group in which you {#blank#}5{#/blank#}( raise). Groups of people live in different ways. They may have different skills, organizations, and art forms. Their family life may be completely different from yours.

    Human beings are inventive animals. They can decide to change their cultures in order to meet various {#blank#}6{#/blank#}(situation). Of all living things, human beings are the {#blank#}7{#/blank#}(clever). They can choose {#blank#}8{#/blank#}(live) in many environments and in a wide variety of ways. Only human beings can choose where and how they want to live and then improve the physical environment to help {#blank#}9{#/blank#}(they)realize these choices.

    Acquiring the wisdom to make wise choices {#blank#}10{#/blank#} (be)the lasting challenge of being human.

    Last October, while tending her garden in Mora, Sweden, Lena Pahlsson pulled out a handful of small {#blank#}1{#/blank#}(carrot) and was about to throw them away. But something made her look closer, and she noticed a {#blank#}2{#/blank#}(shine) object. Yes, there beneath the leafy top of one tiny carrot was her long-lost wedding ring.

    Pahlsson screamed {#blank#}3{#/blank#} loudly that her daughter came running from the house. "She thought I had hurt {#blank#}4{#/blank#}(I)," says Pahlsson.

    Sixteen years {#blank#}5{#/blank#} (early), Pahlsson had removed the diamond ring {#blank#}6{#/blank#} (cook) a meal. When she wanted to put the ring back on later, it was gone. She suspected that one of her three daughters — then ten, eight, and six—had picked it up, but the girls said they hadn't. Pahlsson and her husband {#blank#}7{#/blank#} (search) the kitchen, checking every corner, but turned up nothing. "I gave up hope of finding my ring again," she says. She never replaced it.

    Pahlsson and her husband now think the ring probably got {#blank#}8{#/blank#} (sweep) into a pile of kitchen rubbish and was spread over the garden, {#blank#}9{#/blank#} it remained until the carrot's leafy top accidentally sprouted (生长) through it. For Pahlsson, its return was {#blank#}10{#/blank#} wonder.