以下是两篇课文选段，请任意选择一篇，并根据课文，在文中划线处填上适当单词，每空一词， (共10小题，计10分) 
1） Born in 1930, Dr Yuan __1___ from Southwest Agricultural College in 1953. Since then,   2  ways to grow more rice has been his life goal. As a young man, he saw the great need for increasing the rice output. At that time,   3  was a disturbing problem in many parts of the countryside. Dr Yuan _4__ for a way to increase rice harvests without __5__ the area of the fields. In 1950, Chinese farmers could produce only fifty million tons of rice. In a recent harvest, however, nearly two hundred million tons of rice was produced. These ___6___ harvests mean that 22% of the world’s people are __7__ from just 7% of the farmland in China. Dr Yuan is now __8___ his knowledge in India, Vietnam and many other less developed countries to increase their rice harvests. __9___ to his research, the UN has more tools in the battle to __10__ the world of hunger. Using his hybrid rice, farmers are producing harvests twice as large as before.
2） The most universal   1   expression is, of course, the smile---its   2  is to show happiness and put people at   3  . It does not always mean that we are   4  happy, however. Smiles around the world can be _ 4  , hiding other feelings like anger, fear or worry. There are   5  smiles, such as when someone “lose face” and smiles to   6  it. However, the general   7  of smiling is to show good feelings.
From the time we are babies, we show   8  or anger by frowning. In most places around the world, frowning and turning one’s back to someone shows anger.   __9 _ a fist and shaking it almost always means that someone is angry and   10_  another person.

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