6．
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66．She spent years
and recording their daily activities．
67．Jane has studied these families of chimps for many years and helped people understand how much they
like humans．
68．At that time，hunger was a
problem in many parts of the countryside．
69．He therefore gives millions of yuan to
others for their research in agriculture．
70．Since her
she had wanted to work with animals in their own environment．
71．He is now
his knowledge in many less developed countries to increase their rice harvests．
72．She has argued that wild animals should be left in the wild and not used for
or advertisements．
73．Everybody sits and waits in the
of the trees while the family begins to wake up and move off．
74．He searched for a way to increase rice harvest without
the area of the fields．
75．Yuan Longping has another dream：to
his rice so that it can be grown around the globe．
76．In 1973，he became the first agricultural pioneer in the world to grow rice that has a high
．
77．For forty years Jane has been
about making the rest of the world understand and respect the life of these animals．
78．Yuan Longping has
for millions of Chinese farmers for the past five decades．
79．He feels it gives him less
to do his research．
80．However，the evening makes it all
．