What can you do with nuts?A scientist named George Washington Carver answered that question, over and over again.We should say thanks to him for more than 300{#blank#}1{#/blank#}. When Carver was born in 1864,he was a slave(奴隶）on a farm in Missouri.

    Later, he got freedom. As a teenager,he worked on a farm and{#blank#}2{#/blank#}finish high school. At the age of 30, he became the first back student at the college in lowa.In 1896, he became the first black teacher working at another college in lowa.Several years later, he took a job at a college in Alabama, where he worked until his{#blank#}3{#/blank#}in 1943.

    Carver studied agriculture, the science of farming.His{#blank#}4{#/blank#}made huge improvements in farming in the southern United States.

    Do you love to start your day with a cup of tea in the morning? Maybe you enjoy taking a quiet moment out in the evening to relax with it?

    Tea has been an important part of daily life in China for hundreds of years. There is a{#blank#}1{#/blank#}of tea, such as green tea, black tea, flower tea, and yellow tea. But two rising stars in China's teacups- white tea and dark tea- are becoming more and more{#blank#}2{#/blank#}.

    Dark tea is made of rough, old tea leaves which darken to a deep brown colour during the long process.

    White tea, produced mostly in Fujian, is made by drying tea leaves. The local people{#blank#}3{#/blank#}the fresh leaves out on the ground and keep them in jars after they have dried.

    Both dark tea and white tea have a long history in China. Dark tea and white tea are healthy drinks. Dark tea can{#blank#}4{#/blank#}fat in the body, lower blood pressure and slow the aging process.